Catch every exception instead of only IOException and ExtractionException and add a Javadoc

Catch every exception instead of only IOException and ExtractionException.
Add JavaDoc for fetchAndroidMobileJsonPlayer method of YoutubeStreamExtractor

Author: AudricV

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/extractors/YoutubeStreamExtractor.java

@@ -819,6 +819,12 @@ private void checkPlayabilityStatus(final JsonObject youtubePlayerResponse,
         }
     }
 
+    /**
+     * Fetch the Android Mobile API or fallback to the desktop streams.
+     * If something went wrong when parsing this API, fallback to the desktop JSON player, fetched
+     * again if the {@code signatureTimestamp} of the JS player is unknown (because signatures
+     * without a {@code signatureTimestamp} included in the player request are invalid).
+     */
     private void fetchAndroidMobileJsonPlayer(final ContentCountry contentCountry,
                                               final Localization localization,
                                               final String videoId,
@@ -833,7 +839,7 @@ private void fetchAndroidMobileJsonPlayer(final ContentCountry contentCountry,
         try {
             mobilePlayerResponse = getJsonMobilePostResponse("player", mobileBody,
                     contentCountry, localization);
-        } catch (final IOException | ExtractionException ignored) {
+        } catch (final Exception ignored) {
         }
         if (mobilePlayerResponse != null && mobilePlayerResponse.has("streamingData")) {
             final JsonObject mobileStreamingData = mobilePlayerResponse.getObject(