RFR: Merge openjdk/jdk:master [v2]

[William Kemper]

> Merges tag jdk-22+9. Includes fixes to GHA infrastructure.

William Kemper has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 305 commits:

 - Merge tag 'jdk-22+9' into merge-jdk-22-9
   
   Added tag jdk-22+9 for changeset cff25dd5
 - 8312610: GenShen: Old generation available is unintentionally restricted by mutator's available memory
   
   Reviewed-by: kdnilsen, ysr
 - Merge
 - Merge
 - 8311602: GenShen: Decouple generational mode heuristics
   
   Reviewed-by: kdnilsen, ysr
 - 8312321: GenShen: Remembered set scan may encounter garbage objects
   
   Reviewed-by: kdnilsen
 - 8312422: GenShen: In-place region promotion state may carry over when evacuation fails
   
   Reviewed-by: kdnilsen
 - 8312322: GenShen: Cancelled GCs may become stuck in self-cancellation loop
   
   Reviewed-by: kdnilsen
 - Merge
 - 8311599: GenShen: Missing card mark barrier when processing references
   
   Reviewed-by: ysr
 - ... and 295 more: https://git.openjdk.org/shenandoah/compare/cff25dd5...1219a6af

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Changes: https://git.openjdk.org/shenandoah/pull/303/files
 Webrev: https://webrevs.openjdk.org/?repo=shenandoah&pr=303&range=01
  Stats: 20548 lines in 208 files changed: 18689 ins; 903 del; 956 mod
  Patch: https://git.openjdk.org/shenandoah/pull/303.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah.git pull/303/head:pull/303

PR: https://git.openjdk.org/shenandoah/pull/303