Generic RuboCop::AST::Node for stanza method nodes

- These can be either BlockNode, SendNode or AsgnNode,
  which are all a type of Node.
- This causes errors in other places because we call
  BlockNode or SendNode methods on a Node now. Still TODO.

Library/Homebrew/rubocops/cask/ast/stanza.rb

@@ -14,16 +14,16 @@ module RuboCop
 
         sig {
           params(
-            method_node:  T.any(RuboCop::AST::SendNode, RuboCop::AST::BlockNode),
+            method_node:  RuboCop::AST::Node,
             all_comments: T::Array[T.any(String, Parser::Source::Comment)],
           ).void
         }
         def initialize(method_node, all_comments)
-          @method_node = T.let(method_node, T.any(RuboCop::AST::SendNode, RuboCop::AST::BlockNode))
+          @method_node = T.let(method_node, RuboCop::AST::Node)
           @all_comments = T.let(all_comments, T::Array[T.any(String, Parser::Source::Comment)])
         end
 
-        sig { returns(T.any(RuboCop::AST::SendNode, RuboCop::AST::BlockNode)) }
+        sig { returns(RuboCop::AST::Node) }
         attr_reader :method_node
         alias stanza_node method_node
 

Library/Homebrew/rubocops/cask/discontinued.rbi

@@ -6,7 +6,7 @@ module RuboCop
       class Discontinued < Base
         sig {
           params(
-            base_node: T.any(RuboCop::AST::BlockNode, RuboCop::AST::SendNode),
+            base_node: RuboCop::AST::Node,
             block:     T.nilable(T.proc.params(node: RuboCop::AST::SendNode).void),
           ).returns(T::Boolean)
         }
@@ -14,7 +14,7 @@ module RuboCop
 
         sig {
           params(
-            base_node: T.any(RuboCop::AST::BlockNode, RuboCop::AST::SendNode),
+            base_node: RuboCop::AST::Node,
             block:     T.proc.params(node: RuboCop::AST::SendNode).void,
           ).void
         }