build(flatpak): drop libnotify module

[yakushabb]

Description

The libnotify module is provided in various versions by different runtimes.

I've included below a list of runtimes and the provided libnotify versions.

Unless there is a particular requirement, you may not need to compile it.

Thanks.

Freedesktop 25.08 : "0.8.6"
Freedesktop 24.08 : "0.8.3"

Copy of: flathub/dev.lizardbyte.app.Sunshine#192

Screenshot

Issues Fixed or Closed

Roadmap Issues

Type of Change

• feat: New feature (non-breaking change which adds functionality)
• fix: Bug fix (non-breaking change which fixes an issue)
• docs: Documentation only changes
• style: Changes that do not affect the meaning of the code (white-space, formatting, missing semicolons, etc.)
• refactor: Code change that neither fixes a bug nor adds a feature
• perf: Code change that improves performance
• test: Adding missing tests or correcting existing tests
• build: Changes that affect the build system or external dependencies
• ci: Changes to CI configuration files and scripts
• chore: Other changes that don't modify src or test files
• revert: Reverts a previous commit
• BREAKING CHANGE: Introduces a breaking change (can be combined with any type above)

Checklist

• Code follows the style guidelines of this project
• Code has been self-reviewed
• Code has been commented, particularly in hard-to-understand areas
• Code docstring/documentation-blocks for new or existing methods/components have been added or updated
• Unit tests have been added or updated for any new or modified functionality

AI Usage

• None: No AI tools were used in creating this PR
• Light: AI provided minor assistance (formatting, simple suggestions)
• Moderate: AI helped with code generation or debugging specific parts
• Heavy: AI generated most or all of the code changes

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 15.47%. Comparing base (19a6301) to head (fe9e552).
⚠️ Report is 1 commits behind head on master.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4604      +/-   ##
==========================================
- Coverage   15.47%   15.47%   -0.01%     
==========================================
  Files          94       94              
  Lines       19025    19025              
  Branches     8769     8769              
==========================================
- Hits         2945     2944       -1     
- Misses      14267    14944     +677     
+ Partials     1813     1137     -676     

Flag	Coverage Δ
Archlinux	11.54% <ø> (ø)
FreeBSD-14.3-aarch64	?
FreeBSD-14.3-amd64	13.81% <ø> (+0.01%)	⬆️
Homebrew-ubuntu-22.04	13.29% <ø> (ø)
Linux-AppImage	11.85% <ø> (ø)
Windows-AMD64	13.47% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.
see 41 files with indirect coverage changes

[codecov]

Bundle Report

Bundle size has no change ✅

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud