The basics

• I validated my changes

The details

Resolves

Fixes #9633

Proposed Changes

• Added new ARIA utility functions: getRole, getState, and clearState.
• Added missing roles and states from the Blockly design doc to ensure full ARIA coverage.
• Standardized existing ARIA comments for consistency and clarity.
• Updated and expanded unit tests:
  • Created a separate Utils suite to test getRole, getState, setState, and clearState.
  • Live region tests remain in the Live Region suite but were organized under the top-level Aria suite for clarity.

Reason for Changes

The aria utils were missing some necessary roles/states. This aligns them to section 4.1.1 in the design doc

Test Coverage

• Live region behavior remains fully tested, now in its own suite
• Unit tests added for:
  • getRole behavior for known, unknown, and missing roles.
  • setState storing boolean, string, number, and array values.
  • getState retrieving stored values and returning null when unset.
  • clearState removing attributes correctly.