doNotSwitchQualityOnHlsParts

Do not adapt between HLS variants if the next part is a preload hint that isn't of index 0.

Preload-hints don't have an INDEPENDENT tag, and only the index 0 is guarantied to be independent.

Limitations: The player uses the durations of parts to know if a preload-hint is of index 0 (start of a new segment). The stream must contain at least 2 parts per segments (or 0) and all parts should be of the same duration.