Add @UnsupportedAppUsage annotations

For packages:
  android.speech.tts
  android.speech

This is an automatically generated CL. See go/UnsupportedAppUsage
for more details.

Exempted-From-Owner-Approval: Mechanical changes to the codebase
which have been approved by Android API council and announced on
android-eng@

Bug: 110868826
Test: m
Change-Id: Ib95c98d211b78ddf00fa627709393dabfc8bc82d
Merged-In: I578e17b05247d77e33b846e7e56633b0b4e4c69f