Fixes #217 | Update tab bar indicator color to match app theme

[navaneeth0041]

Update tab bar indicator color to match app theme

Description

Changed default blue indicator color in tab bars to app's primary color for visual consistency across the application.

Fixes #217

Type of change

Please delete options that are not relevant.

• 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 not work as expected)
• Refactor (does not change functionality, e.g. code style improvements, linting)
• Documentation update

How Has This Been Tested?

Tested the following scenarios:

• Tab indicator color matches app's primary color
• Color consistency maintained during tab switches
• Tab functionality works as expected
• Theme changes apply correctly

Please include screenshots below if applicable.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have checked my code and corrected any misspellings

Maintainer Checklist

• closes TabBar indicator color not matching application theme #217
• Tag the PR with the appropriate labels