Fix a typo in an error message in InputMethodManagerService

This it a follow up CL to my previous CL [1], which introduced
EditorInfo#targetInputMethodUser.

There is a typo in Slog.e() message from
InputMethodManagerService#startInputOrWindowGainedFocusInternal() when
cross-user StartInput is requested without without
INTERACT_ACROSS_USERS_FULL permission.  This CL addresses the typo.

There should be no user-visible behavior change.

 [1]: Ia7ea944438d69669ccdf9111b34ba400e786a602
      0f5eade4a492fc91130da1aedcad0999932f4137

Bug: 120744418
Test: atest CtsInputMethodTestCases CtsInputMethodServiceHostTestCases
Change-Id: I09022bb225fb2e37ebf73218aedef9ab2503c53e
diff --git a/services/core/java/com/android/server/inputmethod/InputMethodManagerService.java b/services/core/java/com/android/server/inputmethod/InputMethodManagerService.java
index 4db541c..9688901 100644
--- a/services/core/java/com/android/server/inputmethod/InputMethodManagerService.java
+++ b/services/core/java/com/android/server/inputmethod/InputMethodManagerService.java
@@ -2781,7 +2781,7 @@
         if (attribute != null && attribute.targetInputMethodUser != null
                 && attribute.targetInputMethodUser.getIdentifier() != callingUserId) {
             mContext.enforceCallingPermission(Manifest.permission.INTERACT_ACROSS_USERS_FULL,
-                    "Using EditorInfo.user requires INTERACT_ACROSS_USERS_FULL.");
+                    "Using EditorInfo.targetInputMethodUser requires INTERACT_ACROSS_USERS_FULL.");
             userId = attribute.targetInputMethodUser.getIdentifier();
             if (!mUserManagerInternal.isUserRunning(userId)) {
                 // There is a chance that we hit here because of race condition.  Let's just return