RFR: 8325194: GHA: Add macOS M1 testing

[George Adams]

Now that macOS M1 executors are [available in GitHub actions](https://github.blog/changelog/2024-01-30-github-actions-introducing-the-new-m1-macos-runner-available-to-open-source/) it makes sense to move the build to run on M1 (rather than cross-compiled) and also enable testing on the platform.

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Commit messages:
 - 8325194: GHA: Add macOS M1 testing

Changes: https://git.openjdk.org/jdk/pull/17694/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17694&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8325194
  Stats: 17 lines in 2 files changed: 15 ins; 1 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/17694.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17694/head:pull/17694

PR: https://git.openjdk.org/jdk/pull/17694