Move page count to rememberPagerState

Because androidx.compose.foundation.pager API updated.

Fix: 286126109
Test: Unit test
Test: Manually with Settings
Change-Id: Ia02c8c30690b726d56ea7d33bfbc6be1acff4794
(cherry picked from commit 7b1df82eec28755ffa39a624ec694e4f1ca31dbd)
1 file changed