[MacPorts] #70655: Qt6-qtbase, missing #include and an issue for (some) older systems

[MacPorts]

#70655: Qt6-qtbase, missing #include and an issue for (some) older systems
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  Reporter:  Gandoon     |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.10.1
Resolution:              |   Keywords:
      Port:  qt6-qtbase  |
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Changes (by Gandoon):

 * Attachment "qcocoaapplicationdelegate.mm" added.

 Workaround for (some) systems older than 12

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Ticket URL: <https://trac.macports.org/ticket/70655>
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