fix: update star and padlock icon colors

Description

This MR fixes the star and padlock icon colors in application details screen while viewed on dark mode. The icons were barely visible before the fix was applied.

Screenshots

Before	After

Technical details

Changed the fill colors of ic_star_blank and ic_lock_blank icons from black to primary text color for better UI consistency in dark and light themes.

Tests

Issues

e/backlog#7995 (closed)

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