[macos] tools/jpackage tests timeout due to /usr/bin/osascript

The following test timed out in the JDK18 CI:

tools/jpackage/share/MultiNameTwoPhaseTest.java

The test run contains errors like this:

[11:45:37.245] Running /usr/bin/osascript
[11:51:07.189] Command [PID: 5566]:
    /usr/bin/osascript /var/folders/93/pf04s4c922qcyb7v8xr1y5h8000_dc/T/jdk.jpackage4183342526789260831/config/Hello-dmg-setup.scpt
[11:51:07.190] Output:
    /var/folders/93/pf04s4c922qcyb7v8xr1y5h8000_dc/T/jdk.jpackage4183342526789260831/config/Hello-dmg-setup.scpt:192:204: execution error: Finder got an error: AppleEvent timed out. (-1712)
[11:51:07.190] Returned: 1

[11:51:07.190] java.io.IOException: Command [/usr/bin/osascript, /var/folders/93/pf04s4c922qcyb7v8xr1y5h8000_dc/T/jdk.jpackage4183342526789260831/config/Hello-dmg-setup.scpt] exited with 1 code
at jdk.jpackage/jdk.jpackage.internal.Executor.executeExpectSuccess(Executor.java:90)
at jdk.jpackage/jdk.jpackage.internal.IOUtils.exec(IOUtils.java:215)
at jdk.jpackage/jdk.jpackage.internal.IOUtils.exec(IOUtils.java:193)
at jdk.jpackage/jdk.jpackage.internal.IOUtils.exec(IOUtils.java:172)
at jdk.jpackage/jdk.jpackage.internal.MacDmgBundler.buildDMG(MacDmgBundler.java:404)
at jdk.jpackage/jdk.jpackage.internal.MacDmgBundler.bundle(MacDmgBundler.java:90)
at jdk.jpackage/jdk.jpackage.internal.MacDmgBundler.execute(MacDmgBundler.java:579)
at jdk.jpackage/jdk.jpackage.internal.Arguments.generateBundle(Arguments.java:689)
at jdk.jpackage/jdk.jpackage.internal.Arguments.processArguments(Arguments.java:561)
at jdk.jpackage/jdk.jpackage.main.Main.execute(Main.java:91)
at jdk.jpackage/jdk.jpackage.main.Main.main(Main.java:52)

There are five runs of /usr/bin/osascript and
all have similar errors. I suspect that the issues with
/usr/bin/osascript are what caused the test run to
take so long.

The test did PASS while the timeout handler was running:

[12:03:44.970] [ OK ] MultiNameTwoPhaseTest.test([MultiNameTest, ](length=2)); checks=36
[12:03:44.970] [==========] 5 tests ran
[12:03:44.971] [ PASSED ] 5 tests
----------System.err:(1/15)----------
STATUS:Passed.
----------rerun:(39/8387)*----------

It could be that these /usr/bin/osascript errors are "normal"
and this test just needs a longer timeout.