RFR: Merge openjdk/jdk21u-dev:master

[William Kemper]

Merges tag jdk-21.0.3+1

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Commit messages:
 - 8323154: C2: assert(cmp != nullptr && cmp->Opcode() == Op_Cmp(bt)) failed: no exit test
 - 8320943: Files/probeContentType/Basic.java fails on latest Windows 11 - content type mismatch
 - 8313507: Remove pkcs11/Cipher/TestKATForGCM.java from ProblemList
 - 8315600: Open source few more headless Swing misc tests
 - 8274122: java/io/File/createTempFile/SpecialTempFile.java fails in Windows 11
 - 8324280: RISC-V: Incorrect implementation in VM_Version::parse_satp_mode
 - 8324659: GHA: Generic jtreg errors are not reported
 - 8315761: Open source few swing JList and JMenuBar tests
 - 8322142: JFR: Periodic tasks aren't orphaned between recordings
 - 8321480: ISO 4217 Amendment 176 Update
 - ... and 189 more: https://git.openjdk.org/shenandoah-jdk21u/compare/375769c6...2518d203

The webrev contains the conflicts with master:
 - merge conflicts: https://webrevs.openjdk.org/?repo=shenandoah-jdk21u&pr=19&range=00.conflicts

Changes: https://git.openjdk.org/shenandoah-jdk21u/pull/19/files
  Stats: 30131 lines in 1353 files changed: 15628 ins; 5802 del; 8701 mod
  Patch: https://git.openjdk.org/shenandoah-jdk21u/pull/19.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah-jdk21u.git pull/19/head:pull/19

PR: https://git.openjdk.org/shenandoah-jdk21u/pull/19