[MacPorts] #73180: Retry macOS 26 builds on buildbot with Xcode 26 Metal toolchain fix in place

[MacPorts]

#73180: Retry macOS 26 builds on buildbot with Xcode 26 Metal toolchain fix in
place
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  Reporter:  markmentovai                        |      Owner:  ryandesign
      Type:  request                             |     Status:  reopened
  Priority:  Normal                              |  Milestone:
 Component:  ports                               |    Version:
Resolution:                                      |   Keywords:
      Port:  qt6-qtwebengine, openjdk17,         |
  openjdk21, openjdk25                           |
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Comment (by breun):

 It looks like the macOS buildbots are missing the Metal toolchain again.
 The OpenJDK updates I pushed yesterday fail again. Example:
 https://build.macports.org/builders/ports-26_arm64-builder/builds/40158

 Ryan, could you get the Metal toolchain installed again and trigger builds
 for `openjdk11`, `openjdk17`, `openjdk21`, `openjdk25` and `openjdk26`
 afterwards?

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Ticket URL: <https://trac.macports.org/ticket/73180#comment:49>
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