CX-10234 - Updated ariaExpanded property for undefined scenarios.

[akshatatray]

Description

Buttons announced as "...collapsed" because edge case of empty string was not handled. Resolved ariaExpanded property for empty string cases.

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots:

Before (If applicable):

After:

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [ ] Documentation update
• [ ] Code style update (formatting, local variables)
• [ ] Refactoring (no functional changes, no api changes)
• [ ] Build related changes
• [ ] CI related changes
• [ ] Other... Please describe:

Checklist:

• [x] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes.
• [x] All new and existing tests passed.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (6908576) 94.05% compared to head (ff40a96) 94.03%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1542 +/- ## ========================================== - Coverage 94.05% 94.03% -0.03% ========================================== Files 134 134 Lines 19016 19016 Branches 2905 2905 ========================================== - Hits 17886 17882 -4 - Misses 1130 1134 +4 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[niti-owner]

Can you update the PR description with all the details which are applicable?