Need config resolution before getting dispAreaInfo

DisplayAreaInfo calculation relies on DisplayContent's
full configuration being in its latest state; i.e. config
resolution should have taken place by that time.
Generally, this is carried out by sendNewConfiguration()
triggered up DeferredDisplayUpdater's display info updates.

However in some cases (e.g. when a remote rotation happens
right before physical display size change remote display change
is sent to Shell), sendNewConfiguration can be short-circuited
meaning no configuration resolution would have taken place after
the recent mInitialDisplayWidth/Height updates.

One Solution to this:
Enforce config resolution to be done by
DC#updateDisplayOverrideConfigurationLocked()
if reconfigureDisplayLocked -> sendNewConfiguration() doesn't
actually resolve new config and send it.

Bug: 432725672
Flag: EXEMPT bugfix
Test: manually repro the steps in the bug
Change-Id: Ie3ae5488d1e928702d6914f72548ed7562626897