RFR: 8347147: [REDO] AccessFlags can be u2 in metadata [v3]

[Coleen Phillimore]

> This is the same change that I pushed as commit 098afc8b7d0e7caa82999fb9d4e319ea8aed09a1 but now coordinated with @mur47x111  for the graal changes.
> 
> A tier1 sanity test complete.

Coleen Phillimore has refreshed the contents of this pull request, and previous commits have been removed. Incremental views are not available. The pull request now contains one commit:

  8347147: [REDO] AccessFlags can be u2 in metadata

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Changes:
  - all: https://git.openjdk.org/jdk/pull/22968/files
  - new: https://git.openjdk.org/jdk/pull/22968/files/9b2abf9c..71419187

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22968&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22968&range=01-02

  Stats: 13 lines in 3 files changed: 0 ins; 5 del; 8 mod
  Patch: https://git.openjdk.org/jdk/pull/22968.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22968/head:pull/22968

PR: https://git.openjdk.org/jdk/pull/22968