Release/v3.33.3

[peaBerberian]

The v3.33.3 is a "legacy" release (now that the v4 is the current major version) mostly containing some of the bug fixes and improvements initially made for the next v4 release (probably the v4.1.0).

Both the next v3 and v4 (which contains most of the same fixes and improvements, plus more improvements and some features) should be released at roughly the same time.

Note that this PR is only for visibility, bug fixes and improvements are not all merged yet and consequently this branch does not contain everything announced by the changelog.

Changelog

Bug fixes

• DASH: support absolute path in URL resolution with RFC 3986 implementation [[v3] conform to rfc 3986 url v3 #1446]
• DASH: fix cases of blinking subtitles [ [v3] fix: subtitles blinking in low-latency mode  #1447]
• Fix precision issues of the maxVideoBufferSize API [[v3] When listing segments needed, stop filtering the current range #1448]
• DASH: Prevent multiple loading of the same segment for some DASH low-latency contents
  [ [v3] Fix duplicate segment requests for low-latency contents #1449]
• Await some delay before re-attempting to push a segment following an error [[v3] Await some delay before re-attempting to push a segment following an error #1411]
• DRM/Compat: on Edge test comprehensively KeySystems before considering them as usable
  [[v3] on Edge test comprehensively KeySystems before considering them as usable #1450]
• DRM/Compat: On the PlayStation 5, reload directly when a decryption key become
  unusable to prevent fatal errors [[v3] On the playstation 5, reload ASAP if a key become unusable #1451]
• Directfile/Compat: On safari on iOS no longer stay stuck in buffering when autoPlay
  is set to false or not set and the video element has the attribute "playsinline"
  [fix(safari): no longer stuck in buffering on safari iOS when video has attribute "playsinline" #1406, fix(safari): check seeking event type in addition to the videoElement state "seeking" #1404, Infinity loading state on Safari Mobile when autoplay is false #1390]
• Directfile/compat: On safari mobile in directfile mode, do not stay in an infinite
  LOADING state if the duration is set to NaN (rare issue in a
  normally-unsupported multiple RxPlayer-per-media-element scenario) [[v3] fix(directfile): media with autoplay:false is infinitly in loading state #1452]

Other improvements

• Signal an error if multiple active RxPlayer are linked to the same media element
  [[v3] api: throw an error if an application use a video element in multiple instance of the RxPlayer #1453]
• Undetermined audio and text track language now have a normalized property equal to
  "und" for better ISO 639-3 compatibility [[v3] fix: safari support audio lang "und" in audioTrack #1454]