feat (Desktop): Add ability to boost volume beyond 100% using keyboard/mouse wheel

[ThEgIGN]

Summary

Changed default behavior of volume boost PR to allow volume boost using keyboard/mouse wheel

PR type

• Reproducible bug fix
• UI glitch/bug fix
• Behavior bug/regression fix
• Small maintenance only, with no UI or behavior change
• Docs accuracy fix
• Translation/localization only
• Approved larger or directional change

Why

Judging by Discord, this is a controversial topic.
At first I was against it, but after checking out MPV and VLC players, they both have this behaviour by default, where user can go beyond 100% freely and without being alerted.

Desktop scope

Desktop shared code

Issue or approval

Fixes #618

UI / behavior impact

• No UI change
• No behavior change
• UI changed only to fix a documented glitch/bug
• Behavior changed only to fix a documented bug/regression
• UI change has explicit maintainer approval
• Behavior change has explicit maintainer approval

Policy check

• I have read and understood CONTRIBUTING.md.
• This PR is small, focused, and limited to one problem.
• This PR is scoped to the desktop app, desktop packaging, desktop documentation, or shared code required for desktop behavior.
• This PR is not cosmetic-only.
• Any UI change fixes a linked glitch/bug and includes visual proof, or this PR has no UI change.
• Any behavior change fixes a linked bug/regression or has explicit approval, or this PR has no behavior change.
• This PR does not bundle unrelated refactors, cleanups, formatting, or drive-by changes.
• This PR does not add dependencies, architecture changes, migrations, or product-direction changes without explicit approval.
• I listed the testing performed below.

UI polish, cosmetic-only changes, minor behavior tweaks, and unapproved product changes will be closed without review.

Scope boundaries

Does not include extra UI polish. Only changed default behavior of volume booster.

Testing

• Tested changing volume using wheel and keyboard
• Tested changing volume using mouse
• Tested min and max volume and if you can go beyond those limits
• Tested if volume is remembered when unmuting
• Tested if volume is remembered when reopening stream

Screenshots / Video

Sorry about video missing sound.

volume.mp4

Breaking changes

None

Linked issues

Fix #618