wires D-pad navigation to and from the dock on the Apps and Widgets tab

The header settings icon was consuming DPAD_DOWN with a no-op callback, and
widgets rendered via AndroidView don't take Compose focus, so on a widget-only
page there was no path to reach the dock. Routes DPAD_DOWN from the header
straight to the dock, and adds a tab-level post-consumption fallback so
DPAD_DOWN from a non-focusable widget also lands in the dock.

shows an empty-state with ES-DE Settings shortcut when the ROM librar…

…y is empty

Fixes ROM Search rendering only Android apps (and no clear reason) when a
user opens the pin-a-ROM flow without configured or reachable ROM folders.
Also updates patch notes and bumps version to 2.8.1.

updates patch notes and bumps version

updates patch notes and bumps version

allows dock to be focused by dpad

bump version and updates patch notes

Merge pull request #201 from BrianJr03/feat/home-button-interception

Feat/home button interception

Merge pull request #201 from BrianJr03/feat/home-button-interception

Feat/home button interception

fixes back nav error

Merge pull request #198 from BrianJr03/feature/unified-canvas

Feature/unified canvas