Javascript: fix errors from upcoming rules_java update

[redsun82]

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[Copilot]

Pull Request Overview

This PR updates Boolean comparisons throughout the JavaScript extractor codebase to use .equals() instead of == operator, addressing errors from an upcoming rules_java update that enforces proper object comparison methods.

• Replaces identity comparisons (==/!=) with .equals() calls for Boolean object comparisons
• Adds @SuppressWarnings("ReturnValueIgnored") annotations to methods that intentionally ignore return values
• Affects AST node constructors and parser logic across multiple files

Reviewed Changes

Copilot reviewed 18 out of 18 changed files in this pull request and generated 17 comments.

Show a summary per file

File	Description
Quantifier.java	Updates greedy flag comparison in regexp quantifier constructor
CharacterClass.java	Updates inverted flag comparison in regexp character class constructor
UnaryTypeConstructor.java	Updates prefix flag comparison in JSDoc type constructor
FunctionType.java	Updates _new flag comparison in JSDoc function type constructor
YieldExpression.java	Updates delegating flag comparison in yield expression constructor
UpdateExpression.java	Updates prefix flag comparison in update expression constructor
UnaryExpression.java	Updates prefix flag comparison in unary expression constructor
TemplateElement.java	Updates tail flag comparison in template element constructor
Property.java	Updates computed and method flag comparisons in property constructor
MemberExpression.java	Updates computed, optional, and onOptionalChain flag comparisons
Literal.java	Updates value comparison in isFalsy() method
InvokeExpression.java	Updates optional and onOptionalChain flag comparisons
ForInStatement.java	Updates each flag comparison in for-in statement constructor
ComprehensionExpression.java	Updates generator flag comparison in comprehension expression
ComprehensionBlock.java	Updates of flag comparison in comprehension block constructor
AFunctionExpression.java	Updates generator and async flag comparisons when creating function info
FlowParser.java	Adds suppression annotation for intentionally ignored return value
Parser.java	Updates oldStrict comparison and adds suppression annotation

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