Removed the unnecessary creation of ZimFileReader when opening notes on the Notes screen.

[MohitMaliFtechiz]

Fixes #4180

• Removed the unnecessary creation of ZimFileReader when opening notes on the Notes screen.
• Refactored AddNoteDialog to use database values for performing note-related operations (e.g., view, edit, delete notes) instead of setting and using ZimFileReader.

screen-20250121-155323.mp4

[codecov]

Codecov Report

Attention: Patch coverage is 52.17391% with 22 lines in your changes missing coverage. Please review.

Project coverage is 56.78%. Comparing base (6272219) to head (7321e1a).

Files with missing lines	Patch %	Lines
...a/org/kiwix/kiwixmobile/core/main/AddNoteDialog.kt	45.94%	2 Missing and 18 partials ⚠️
...x/kiwixmobile/core/page/viewmodel/PageViewModel.kt	0.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #4183      +/-   ##
============================================
- Coverage     56.88%   56.78%   -0.11%     
  Complexity     1526     1526              
============================================
  Files           313      313              
  Lines         13455    13442      -13     
  Branches       1674     1676       +2     
============================================
- Hits           7654     7633      -21     
- Misses         4645     4654       +9     
+ Partials       1156     1155       -1     

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