Fixed Failing tests for pinInputFieldStyledFocusState Flag advance

When attempting to turn on pinInputFieldStyledFocusState Flag
ag/26151700 Test failures occured due to
1. the usage of JavaAdapter.collectFlow
   which under the hood calls view.repeatWhenAttached which should only be called
   from main thread but our tests were not calling this from mainthread.
2. Attempting to write a value to a null object gotten from acessing a
   mocked object's field(passwordTextView.layoutParams)

Fixes: 316106516
Test: NA
Flag: NA
Change-Id: I078020dd7753e0f5c275c4a7572e5f5109847ad7