Flow Store UI Enhancements and Sentry Crash Reporting Integration

[kritagya-khanna]

Overview
This PR merges improvements from two separate branches into the chromium branch, addressing UI enhancements, bug fixes, and integrating Sentry crash reporting for improved error tracking.

Changes Implemented

1. Flow Store UI Enhancements & Bug Fixes

• Resolved the following issues: Media Files Fail to Download in Browser #257 , Application Crashes When Holding and Dismissing Install Popup #256 , Application Crashes When Renaming Duplicate CRX File After Reinstalling Extension #255, Flow Store crashes if the page is refreshed before the extension installation is complete. #250, Flow-Store - The Install button's state is not dynamic. #249
• Made the Install button dynamic.
• Fixed app crash issues related to the install popup and media downloads.
• Improved UI structure for better user experience.

2. Sentry Crash Reporting Integration

• Integrated Sentry Crashpad to capture and report native crashes in the custom Chromium build.
• Configured crash report storage and upload paths for proper log handling.
• Adjusted Sentry initialization to align with the browser’s startup sequence for improved reliability.
• Ensured proper symbolization of crash logs for easier debugging and analysis.
• Verified crash reporting on multiple Android versions for compatibility.
• Ensured crash reports contain necessary debug symbols for accurate issue identification.

Testing
Verified UI improvements for proper behavior in the flow store.
Tested crash reporting by triggering test crashes and confirming they appear in the Sentry dashboard.

Closing Issues
This PR potentially resolves the following issues: #257, #256, #255, #250, #249