Fix for Duplicate class in TextClassifier

This seems to be a common on flagging classes. The class from mainline collides with the framework class. Similar fix can be found in PermissionController as well: `rule android.permission.flags.Flags com.android.permissioncontroller.jarjar.@0`.

Bug: 396969015
Bug: 388898030
Test: manual, pre-submit, abtd
Flag: android.permission.flags.enable_otp_in_text_classifiers
Merged-In: Iffd1e5100f82ec900440de6063290d7d0bc54915
Change-Id: Iffd1e5100f82ec900440de6063290d7d0bc54915
syncing changes from git_main to main