Standardize watchdog messages

Try to stick to a common layout for watchdog messages:

- Skip leading "In " prefix.
- Identify "<type>::<method>".
- Ensure that all watchpoints around KeyMint invocations mention either
  "IKeyMintDevice" or "IKeyMintOperation" (to make it clearer when
  Keystore is blocked on the underlying KeyMint implementation).

Bug: 265778655
Test: watch logcat, add deliberate sleeps
Change-Id: I803a0a7a60b445848afea00b5f48cf7fd1f17fe5
diff --git a/keystore2/src/super_key.rs b/keystore2/src/super_key.rs
index fa1de98..42fd764 100644
--- a/keystore2/src/super_key.rs
+++ b/keystore2/src/super_key.rs
@@ -917,7 +917,7 @@
                     KeyType::Client, /* TODO Should be Super b/189470584 */
                     |dev| {
                         let _wp =
-                            wd::watch("In lock_unlocked_device_required_keys: calling importKey.");
+                            wd::watch("SKM::lock_unlocked_device_required_keys: calling IKeyMintDevice::importKey.");
                         dev.importKey(key_params.as_slice(), KeyFormat::RAW, &encrypting_key, None)
                     },
                 )?;