Support PlatformTextInputPluginRegistry for non-android targets

[pjBooms]

Compose 1.4 adds new abstraction:

androidx.compose.ui.text.input.PlatformTextInputPluginRegistry

Documentation says:

The only time a new service type and adapter should be defined is
if you are building your own text input system from scratch, including your own `TextField`
composables.

There is also a demo for the new feature: androidx.compose.foundation.demos.text.PlatformTextInputAdapterDemo.kt

See also: https://partnerissuetracker.corp.google.com/issues/267235947

Support the new feature on demand.