osd: click to hide some osds

[ArijanJ]

Description

Adds click-to-hide to the edges of:

• VolumeOSD
• MediaVolumeOSD
• MicVolumeOSD
• BrightnessOSD

These used to stay on the screen for a set time no matter what, and this PR lets users click on the outside of the interactable areas to dismiss them. Media playback OSD already had this functionality and it fits well in these OSDs too.

Type of change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that changes existing behavior)
• Refactor / internal cleanup
• Documentation
• Other

Related issues

Screenshots / video

Checklist

• My code follows the conventions in CONTRIBUTING.md
• I have tested my changes locally
• [n/a] New user-facing strings are wrapped in I18n.tr() with translator context, reusing existing terms where possible
• [n/a] Go changes: ran make fmt, added/updated tests, make test passes, and go mod tidy is clean
• QML changes: ran make lint-qml with no new warnings
• [n/a] I have opened a corresponding pull request in dlx-docs to document any new behaviors: https://github.com/AvengeMedia/DankLinux-Docs