[jfx23u] RFR: 8336940: Update GStreamer to 1.24.6

[Alexander Matveev]

Clean backport of JDK-8336940 and JDK-8336939.

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Commit messages:
 - Backport b88ac0495650bd033ba11e3131e9bffc517872eb

Changes: https://git.openjdk.org/jfx23u/pull/14/files
  Webrev: https://webrevs.openjdk.org/?repo=jfx23u&pr=14&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8336940
  Stats: 24630 lines in 329 files changed: 13062 ins; 6878 del; 4690 mod
  Patch: https://git.openjdk.org/jfx23u/pull/14.diff
  Fetch: git fetch https://git.openjdk.org/jfx23u.git pull/14/head:pull/14

PR: https://git.openjdk.org/jfx23u/pull/14