Fixed: Navigation drawer showing while reading a book in fullscreen mode.

[MohitMaliFtechiz]

Fixes #4184

• Disabled the right drawer when the user is reading a book in fullscreen mode to ensure uninterrupted reading.
• Also disabled the drawer while a video is playing in fullscreen mode to avoid interruptions during video playback.

screen-20250124-164154.mp4

[codecov]

Codecov Report

Attention: Patch coverage is 28.57143% with 10 lines in your changes missing coverage. Please review.

Project coverage is 56.73%. Comparing base (99aae94) to head (22a3b4d).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
.../kiwix/kiwixmobile/core/main/CoreReaderFragment.kt	0.00%	8 Missing ⚠️
...bile/nav/destination/reader/KiwixReaderFragment.kt	0.00%	1 Missing ⚠️
...rg/kiwix/kiwixmobile/core/main/CoreMainActivity.kt	80.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #4189      +/-   ##
============================================
+ Coverage     56.68%   56.73%   +0.04%     
- Complexity     1524     1532       +8     
============================================
  Files           313      313              
  Lines         13477    13490      +13     
  Branches       1688     1693       +5     
============================================
+ Hits           7640     7653      +13     
- Misses         4671     4682      +11     
+ Partials       1166     1155      -11     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.