8355740: Update to Xcode 15.4 on macOS

[kevinrushforth]

This PR updates the compiler on macOS to Xcode 15.4 (from 14.3.1) to match JDK 25.

I ran a full headless and headful test run, including building media and WebKit. No issues were found.

NOTE: Xcode 15.4 requires macOS 14 Sonoma to build (although it is known to build on macOS 13, which might be useful for developer builds). The generated JavaFX code will run on older versions of macOS.

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Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• Change must be properly reviewed (2 reviews required, with at least 1 Reviewer, 1 Author)

Issue

• JDK-8355740: Update to Xcode 15.4 on macOS (Bug - P3)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jfx.git pull/1798/head:pull/1798
$ git checkout pull/1798

Update a local copy of the PR:
$ git checkout pull/1798
$ git pull https://git.openjdk.org/jfx.git pull/1798/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 1798

View PR using the GUI difftool:
$ git pr show -t 1798

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jfx/pull/1798.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back kcr! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[kevinrushforth]

Reviewers: @arapte @tiainen

/reviewers 2

[openjdk]

@kevinrushforth
The total number of required reviews for this PR (including the jcheck configuration and the last /reviewers command) is now set to 2 (with at least 1 Reviewer, 1 Author).

[mlbridge]

Webrevs

• 00: Full (11b57b1f)