fix(FEC-14071): thumbnail requests append height, width, ks too many …

…times (#67)

### Description of the Changes

align related with changes in `updateKalturaPoster` API.

**related PRs:**
kaltura/playkit-js-providers#243
kaltura/kaltura-player-js#830

### CheckLists

- [ ] changes have been done against master branch, and PR does not
conflict
- [ ] new unit / functional tests have been added (whenever applicable)
- [ ] test are passing in local environment
- [ ] Travis tests are passing (or test results are not worse than on
master branch :))
- [ ] Docs have been updated

src/services/image-service.ts

@@ -17,7 +17,7 @@ class ImageService {
   async getImageUrl(url: string): Promise<string | null> {
     if (!url) return null;
 
-    const posterData = {poster: url};
+    const posterData = {poster: url, rawThumbnailUrl: url};
     this.player.updateKalturaPoster(posterData, posterData, {width: MAX_WIDTH, height: MAX_HEIGHT});
     if (await this.imageFound(posterData.poster)) {
       return posterData.poster;