Apply minimal task dimension to all task bounds change.

We only used to apply the minimal dimension on resizeTask in
ActivityStackSuperior which is mostly used for freeform and
missed resizes that went through other channels like resizeStack
which is used for split-screen.
We now apply it on TaskRecord.updateOverrideConfiguration which
all task bounds changes go through.

Bug: 27220870
Change-Id: I856948c371f5f5f144e61029ced4a467f7ebe33a