RFR: 8338662: Shenandoah: Remove excessive ShenandoahVerifier::verify_during_evacuation [v2]

[William Kemper]

> Not clean, combined with a related change.

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

  Align gc state with `verify_before_updaterefs` expectations

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Changes:
  - all: https://git.openjdk.org/shenandoah-jdk21u/pull/129/files
  - new: https://git.openjdk.org/shenandoah-jdk21u/pull/129/files/78873b91..7721cda9

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=shenandoah-jdk21u&pr=129&range=01
 - incr: https://webrevs.openjdk.org/?repo=shenandoah-jdk21u&pr=129&range=00-01

  Stats: 3 lines in 1 file changed: 2 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/shenandoah-jdk21u/pull/129.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah-jdk21u.git pull/129/head:pull/129

PR: https://git.openjdk.org/shenandoah-jdk21u/pull/129