Reset clat interface flag on IpClient start to prevent stale state

Renamed mHasClatInterface to mHasSeenClatInterface and reset it to false
upon IpClient entering the running state to ensure accurate tracking of
clat interface existence.

Bug: 341655939
Test: TH
Change-Id: I58867e17f5faef85a5f6c4547286bb99d01920b3
1 file changed