[PM] Support better transition in PIA V2 (3/N)

Migrate uninstallation fragments to one new UninstallationFragment

Flag: android.content.pm.use_pia_v2
Test: atest CtsPackageInstallerCUJUninstallationTestCases
Bug: 274120822
Bug: 402448072
Change-Id: I2bb5380e1a71655852d8e247c3e71dca7c6f2c20