Fix test on no-auto tz devices

Fix android.app.time.cts.TimeManagerTest#testSetManualTimeZone on
devices that don't have automatic time zone detection.

To test what happened when the setManualTimeZone() method was called
when the device is in "auto tz" mode, the test attempts to toggle the
auto tz mode. This doesn't work on devices that aren't configured to
support auto tz!

Bug: 255180321
Test: atest tests/tests/time/src/android/app/time/cts/TimeManagerTest.java
      (on a device that doesn't support auto tz)
Change-Id: Icfc7eb29acb2fa3ef9771a4f291f60f115cdee3d
1 file changed