[jdk11u-dev] RFR: 8369226: GHA: Switch to MacOS 15

[Antonio Vieiro]

Backport of [JDK-8369226](https://bugs.openjdk.org/browse/JDK-8369226) from JDK17 that upgrades `macos-13` runners to `macos-15-intel`, and XCode from `14.3.1` to `16.4`, since `macos-13` will be removed in early december.

The backport is not clean, as there are many differences between GHA in JDK11 and upper versions (e.g.
[JDK-8341097](https://bugs.openjdk.org/browse/JDK-8341097), [JDK-8325194](https://bugs.openjdk.org/browse/JDK-8325194)).

One test failed with the new configuration, due to [JDK-8368192](https://bugs.openjdk.org/browse/JDK-8368192). This is included in a second commit. 

Some other tests in `tier1` are also failing on `macos` and may require future backports.

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Commit messages:
 - Backport 2b5b97b3cc44b34f1d3d2f2e9fd2fa545d769e3b
 - Backport 7fe25530c47cacc11c5214ef7ef4db443701eabf

Changes: https://git.openjdk.org/jdk11u-dev/pull/3117/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=3117&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8369226
  Stats: 26 lines in 4 files changed: 2 ins; 3 del; 21 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/3117.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/3117/head:pull/3117

PR: https://git.openjdk.org/jdk11u-dev/pull/3117