Consolidate the check of isolated nav TF

Now we enable isoloated navigation to split pin secondary conatiner
and overlay container. Checks whether to resolve a container
by checking if isolated navigation is enabled instead of checking
if it's a split pin secondary container.

Test: atest WMJetpackUnitTests
Bug: 243518738

Change-Id: I92bc6e00873ea63b3910308480f5a94cd2604677