RFR: Merge openjdk/jdk21u-dev:master [v3]

[William Kemper]

> Merges tag jdk-21.0.3+2

William Kemper has updated the pull request incrementally with one additional commit since the last revision:

  Remove uses of removed flag from generational code

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Changes:
  - all: https://git.openjdk.org/shenandoah-jdk21u/pull/20/files
  - new: https://git.openjdk.org/shenandoah-jdk21u/pull/20/files/83cb3dc1..19626567

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=shenandoah-jdk21u&pr=20&range=02
 - incr: https://webrevs.openjdk.org/?repo=shenandoah-jdk21u&pr=20&range=01-02

  Stats: 3 lines in 3 files changed: 0 ins; 1 del; 2 mod
  Patch: https://git.openjdk.org/shenandoah-jdk21u/pull/20.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah-jdk21u.git pull/20/head:pull/20

PR: https://git.openjdk.org/shenandoah-jdk21u/pull/20