Playback of an HLS stream with redundant playlists for failover does not work if primary stream is missing

Version

Media3 1.4.1

More version details

Bug also reproduceable in Media3 v1.4.0. /1.5.0

Devices that reproduce the issue

Google Pixel 7a with Android 15

Devices that do not reproduce the issue

No response

Reproducible in the demo app?

Yes

Reproduction steps

Play a HLS Livestream Manifest with primary and backup playlist on an Android based device which uses ExoPlayer(Android TV, Smartphone, etc.)
Condition: Primary streams (manifest, + segments) are not available (HTTP 404 Errorcode)

Example HLS Manifest:
index.m3u8.txt

Expected result

The player switches to the backup playlists when recieving "HTTP ERROR 404" for the primary playlists.

Actual result

The player stops playback

Media

Not applicable,
A test stream will be delivered later, as it is currently only available in Germany due to geoblocking.

Bug Report

• You will email the zip file produced by adb bugreport to
  android-media-github@google.com after filing this issue.