fix: make version update check more robust

[ReenigneArcher]

Description

• Use BUILD_VERSION for flatpak, Portfile, and homebrew builds
• Use version with v prefix for all builds
• More robust version comparison in web ui

Screenshot

Issues Fixed or Closed

• Fixes Web interface claims there is a new version, while running latest available #2406

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Dependency update (updates to dependencies)
• Documentation update (changes to documentation)
• Repository update (changes to repository files, e.g. .github/...)

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated the in code docstring/documentation-blocks for new or existing methods/components

Branch Updates

LizardByte requires that branches be up-to-date before merging. This means that after any PR is merged, this branch
must be updated before it can be merged. You must also
Allow edits from maintainers.

• I want maintainers to keep my branch updated

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 6.77%. Comparing base (c896dab) to head (b681aef).

Additional details and impacted files

@@           Coverage Diff            @@
##           nightly   #2437    +/-   ##
========================================
  Coverage     6.77%   6.77%            
========================================
  Files           86      86            
  Lines        17523   17523            
  Branches      8070    8056    -14     
========================================
  Hits          1187    1187            
+ Misses       15392   14662   -730     
- Partials       944    1674   +730     

Flag	Coverage Δ
Linux	5.75% <ø> (ø)
Windows	2.04% <ø> (ø)
macOS-12	8.44% <ø> (ø)
macOS-13	7.77% <ø> (-0.02%)	⬇️
macOS-14	8.11% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

see 29 files with indirect coverage changes