Develop to main v2.1

[volodymyr-chekyrta]

Sync develop to the main branch.

Features:

• Static Code Analyzer:
  Introduced Detekt for static analysis and applied several refactorings (e.g., reducing nested block depth and other rule changes) to address warnings.
• Browser-Based Authentication:
  Added support for login and registration via a browser custom tab, enabling third-party authentication flows.

Fixes:

• Course & Unit Handling:
  • Fixed the issue with dataValue for CourseOutline.
  • Addressed problems handling units with no descendants and prevented a crash when retrieving the first topic.
• Transcription & Analytics:
  • Caught exceptions during transcription file parsing.
  • Improved analytics event tracking and added missing events.
• Bulk Download & Offline Mode:
  • Fixed a crash during bulk downloads by validating progress values (fixing LEARNER-10248).
  • Resolved issues with opening courses in offline mode.

Chores & Refactors:

• Video Playback & Network Handling:
  Enabled auto-play for videos when ready and handled the “no network” error for Webview.
• Static Analyzer Refactoring:
  Made additional minor rule changes and code adjustments as part of the static analyzer integration.

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