fix: Increase reliability of media auto actions (e.g. play) (#1934)

Refactors media player handling entirely to make the code more
consistent and less boilerplate. Add testing for media player actions.

- Closes #1921
- Closes #1916

src/patches/types.ts

@@ -0,0 +1,3 @@
+import { LitElement } from 'lit';
+
+export type ConstructableLitElement = { new (...args: unknown[]): LitElement };