feat(tap): some best practice rules map to RGAA

[WilcoFiers]

Mark the following best practice rules as part of RGAA:

• focus-order-semantics (experimental)
• region
• skip-link
• table-duplicate-name

[Copilot]

Pull Request Overview

This PR maps four existing accessibility best practice rules to corresponding RGAA (French accessibility guidelines) standards by adding appropriate RGAA tags.

• Add RGAAv4 compliance tags to four accessibility rules
• Map specific RGAA criteria to table-duplicate-name, skip-link, region, and focus-order-semantics rules
• Maintain existing best-practice categorization while adding French accessibility standard compliance

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
lib/rules/table-duplicate-name.json	Adds RGAA-5.2.1 tag for table caption/summary validation
lib/rules/skip-link.json	Adds RGAA-12.7.1 tag for skip link target validation
lib/rules/region.json	Adds RGAA-9.2.1 tag for landmark content validation
lib/rules/focus-order-semantics.json	Adds RGAA-12.8.1 tag for focus order semantics and reformats tags array

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[dbjorge]

Code change looks good. We'll want to consider highlighting this in the 4.11 release notes.

[padmavemulapati]

This is verified with the latest axe-core dev build,
Now seeing the RGAA standards for

• focus-order-semantics (experimental)
• region
• skip-link
• table-duplicate-name

focus-order-semantics Rule

region Rule

skip-link Rule

table-duplicate-name Rule