sorbet: Comment more files that can't be strict because of undef

- Found with
  `grep -rL "# typed: strict" Library/Homebrew | xargs grep -l "undef "`.
- This stops people from trying to bump them and
  getting an error that they can't fix because
  [it's a Sorbet limitation](https://sorbet.org/docs/error-reference#3008),
  wasting contributor time.

Library/Homebrew/cli/args.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 require "ostruct"

Library/Homebrew/extend/os/linux/cleanup.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 module Homebrew

Library/Homebrew/extend/os/linux/dependency_collector.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 require "os/linux/glibc"

Library/Homebrew/extend/os/linux/diagnostic.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 require "tempfile"

Library/Homebrew/extend/os/linux/formula.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 class Formula

Library/Homebrew/extend/os/linux/formula_installer.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 class FormulaInstaller

Library/Homebrew/extend/os/linux/keg.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 class Keg

Library/Homebrew/extend/os/linux/parser.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 module Homebrew

Library/Homebrew/extend/os/linux/simulate_system.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 module Homebrew

Library/Homebrew/extend/os/mac/cleaner.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 class Cleaner

Library/Homebrew/extend/os/mac/cleanup.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 module Homebrew

Library/Homebrew/extend/os/mac/dependency_collector.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 class DependencyCollector

Library/Homebrew/extend/os/mac/dev-cmd/bottle.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 module Homebrew

Library/Homebrew/extend/os/mac/development_tools.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 require "os/mac/xcode"

Library/Homebrew/extend/os/mac/diagnostic.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 module Homebrew

Library/Homebrew/extend/os/mac/extend/ENV/std.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 module Stdenv

Library/Homebrew/extend/os/mac/extend/ENV/super.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 module Superenv

Library/Homebrew/extend/os/mac/formula.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 class Formula

Library/Homebrew/extend/os/mac/formula_installer.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 class FormulaInstaller

Library/Homebrew/extend/os/mac/hardware/cpu.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 require "macho"

Library/Homebrew/extend/os/mac/keg.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 require "system_command"

Library/Homebrew/extend/os/mac/keg_relocate.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 class Keg

Library/Homebrew/extend/os/mac/linkage_checker.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 class LinkageChecker

Library/Homebrew/extend/os/mac/readall.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 module Readall

Library/Homebrew/extend/os/mac/simulate_system.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 module Homebrew

Library/Homebrew/extend/os/mac/system_config.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 require "system_command"

Library/Homebrew/ignorable.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
 # frozen_string_literal: true
 
 require "warnings"