fix: silence unhandled play() rejections from internal callers

`art.play()` is an async wrapper around the native `video.play()` promise, which
rejects when a pending play request is interrupted (`pause()`, `load()`, a new
`src`, or the element being removed) and when autoplay is blocked.

Every internal caller fires it from an event handler and cannot await it, so the
rejection escapes as a global `unhandledrejection`. Error trackers report it as
an uncaught crash even though the player recovers on its own — for example
destroying the player right after mount, which is routine when the video sits in
a modal the user can close quickly.

Add a `silencePromise` util (the same approach video.js uses) and apply it to the
non-awaited internal call sites: mask, play control, mini player, loop restart,
autoPlayback jump, hotkey and click toggles.

`switchMix` is fixed too, for a second symptom: `await art.play()` inside the
async `video:canplay` handler both leaked the rejection and left the `switchUrl`
promise pending forever, since the throw never reached the enclosing executor's
`reject`. It now settles.

The public API is unchanged: `art.play()` and `art.toggle()` still return the
original promise, so applications that call them keep their own rejection to
handle. Only the internal, non-awaited copy is silenced.

packages/artplayer/types/utils.d.ts

@@ -43,6 +43,7 @@ export interface Utils {
   loadImg: (url: string, scale?: number) => Promise<HTMLImageElement>
 
   errorHandle: <T extends boolean>(condition: T, msg: string) => T extends true ? T : never
+  silencePromise: <T>(value: T) => T extends PromiseLike<infer R> ? Promise<R | undefined> : T
   def: (obj: object, name: string, value: unknown) => void
   has: (obj: object, name: PropertyKey) => boolean
   get: (obj: object, name: PropertyKey) => PropertyDescriptor | undefined