[google_maps_flutter] ios: re-enable test with popup

[cyanglaz]

Re-able the test that triggers system alert as it seems not failing anymore in newest iOS versions.

fixes: https://github.com/flutter/flutter/issues/93325

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[cyanglaz]

Need to wait until https://github.com/flutter/engine/pull/32820 going to stable before we can land this, so that the test can pass on both stable and master

[cyanglaz]

The engine roll commit is: https://github.com/flutter/flutter/commit/dd65b6ba5bef2a9b62714025429feeb405b046cc

We can merge when is commit is in stable branch.

[stuartmorgan]

We can merge when is commit is in stable branch.

That day is upon us :)

[ditman]

This seems to be breaking the tree?

https://ci.chromium.org/ui/p/flutter/builders/prod/Mac_x64%20ios_platform_tests_1_of_4%20stable/17/overview