Massage APIs for upcoming doclava change.

These changes are needed to ensure that "checkapi" doesn't claim
that we're changing the API after an upcoming doclava change.

Test: manual inspection of API text files
Bug: 69505783
Change-Id: I8292ba80cc65b7dd78f0e9dba4fcc7ffcedfab9c
Merged-In: I8292ba80cc65b7dd78f0e9dba4fcc7ffcedfab9c

telecomm/java/android/telecom/TelecomManager.java

@@ -1346,6 +1346,7 @@ public class TelecomManager {
     /**
      * Returns whether TTY is supported on this device.
      */
+    @SystemApi
     @RequiresPermission(anyOf = {
             android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE,
             android.Manifest.permission.READ_PHONE_STATE