Robert Ancell c5e809a998
Remove WindowingOwner.hasTopLevelWindows (#178033)
This function doesn't seem to serve any purpose.
Top level is not a term we are currently using in the multi window code.
If we want to track if we have open windows, this can be done in the
Flutter framework - it doesn't need to be done at the platform level.
2025-11-06 13:11:28 +00:00
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