fix(SUP-37490): Align captions with clipTo/SeekFrom Values in PlayMan…

…ifest

### Description of the Changes

Move the processing of seekFrom and clipTo from loadMedia() into
configure(), where instead of using values from loadMedia mediaOptions
arguments, we can use the combined sources config set by merging
mediaOptions values with sources config values (which is where the
kalturaSeekFrom, kalturaClipTo values from URL are set).

Which means that:
- If the values are set ONLY by URL, we use those values to clip
captions.

- If the values are set ONLY by loadMedia, we use those values.

- If a value is set by URL and ALSO by mediaOptions, we prefer the value
set by configuration over the value set by mediaOptions (which actually
seems to be a bug because [it should be the
opposite](#880), but
this is the current behavior). So for example, kalturaSeekFrom=30 in URL
would override the seekFrom value set by loadMedia(..., { seekFrom: 10,
clipTo: 50 }).

- If one value is set by URL and one is set by mediaOptions 
(i.e. inside the page https://...?kalturaSeekFrom=20) we call
loadMedia(..., {clipTo: 60}),
we use the combined values {seekFrom: 20, clipTo: 60} together to clip
the captions.

src/kaltura-player.ts

@@ -162,9 +162,6 @@ export class KalturaPlayer extends FakeEventTarget {
     this.reset();
     this._localPlayer.loadingMedia = true;
     this._uiWrapper.setLoadingSpinnerState(true);
-    // TODO update sources config types in provider
-    this.handleSourceTimeRangeUpdate((mediaOptions as any)?.seekFrom, (mediaOptions as any)?.clipTo);
-
     try {
       const providerMediaConfig: ProviderMediaConfigObject = await this._provider.getMediaConfig(mediaInfo);
       const mediaConfig = Utils.Object.copyDeep(providerMediaConfig);
@@ -271,6 +268,7 @@ export class KalturaPlayer extends FakeEventTarget {
     delete localPlayerConfig.plugins;
     if (localPlayerConfig.sources) {
       const { sources } = localPlayerConfig;
+      this.handleSourcesTimeRangeUpdate(sources.seekFrom, sources.clipTo);
       delete localPlayerConfig.sources;
       this._localPlayer.configure(localPlayerConfig);
       this._localPlayer.setSources(sources || {});
@@ -1207,7 +1205,7 @@ export class KalturaPlayer extends FakeEventTarget {
     return this._sessionIdCache;
   }
 
-  private handleSourceTimeRangeUpdate(seekFrom: number | undefined, clipTo: number | undefined): void {
+  private handleSourcesTimeRangeUpdate(seekFrom: number | undefined, clipTo: number | undefined): void {
     let ignoreManifestTextTracks = false;
 
     if (typeof seekFrom === 'number') {