fixes #1248 validating draft4 schemas

[stevehu]

No description provided.

[Copilot]

Pull request overview

This PR updates regex compilation/validation so the GraalJS-backed ECMA-262 regex implementation can choose whether to apply the JavaScript Unicode (u) flag based on the schema dialect (aimed at fixing draft-04/draft-07 regex validation differences).

Changes:

• Add a schema-context-aware overload to RegularExpressionFactory, and route regex compilation through it.
• Update the GraalJS regex implementation to build RegExp functions with and without the u flag depending on SpecificationVersion.
• Add a regression test asserting draft-07 regex-format validation behavior with GraalJS.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/test/java/com/networknt/schema/regex/RegularExpressionTest.java	Adds a test for draft-07 format: regex behavior using GraalJS and boolean output validation.
src/main/java/com/networknt/schema/regex/RegularExpressionFactory.java	Introduces a default, schema-context-aware overload for obtaining compiled regexes.
src/main/java/com/networknt/schema/regex/RegularExpression.java	Routes compilation through the new factory overload, passing SchemaContext.
src/main/java/com/networknt/schema/regex/GraalJSRegularExpressionFactory.java	Selects unicode/non-unicode regex compilation based on schema dialect version.
src/main/java/com/networknt/schema/regex/GraalJSRegularExpressionContext.java	Builds and caches both unicode and non-unicode RegExp builders.
src/main/java/com/networknt/schema/regex/GraalJSRegularExpression.java	Adds a unicode toggle to choose the appropriate builder at compile time.

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[stevehu]

• Pushed the Copilot follow-up to PR #1249.

Commit: bae63a9 Address regex factory review comments

What changed:

• json-schema-validator/src/main/java/com/networknt/schema/regex/ECMAScriptRegularExpressionFactory.java:50 now forwards the context-aware overload to its delegate.
• json-schema-validator/src/main/java/com/networknt/schema/regex/AllowRegularExpressionFactory.java:41 now preserves SchemaContext when delegating after the allow check.
• json-schema-validator/src/main/java/com/networknt/schema/regex/GraalJSRegularExpressionFactory.java:70 now handles null context consistently with the legacy one-arg path.
• json-schema-validator/src/test/java/com/networknt/schema/regex/RegularExpressionTest.java:65 now has explicit draft-04 coverage, plus decorator-factory coverage for the schema-context
  forwarding.

[Copilot]

Pull request overview

Copilot reviewed 8 out of 8 changed files in this pull request and generated 1 comment.

[stevehu]

• Addressed the new Copilot comment on PR #1249 and pushed it.

Commit: 03dc296 Rename regex specification version variable

Change made:

• Renamed the misleading local variable dialect to specificationVersion in json-schema-validator/src/main/java/com/networknt/schema/regex/GraalJSRegularExpressionFactory.java:70.

[Copilot]

Pull request overview

Copilot reviewed 8 out of 8 changed files in this pull request and generated no new comments.