Remove a dependency on IMMS#getCurrentImeUserIdLocked()

This is a mechanical refactoring CL to remove the dependency on

  InputMethodManagerService#getCurrentImeUserIdLocked()

from

  InputMethodBindingControllerTest

without changing any test expectation.

Bug: 350386877
Test: atest FrameworksInputMethodSystemServerTests
Flag: TEST_ONLY
Change-Id: I37fb73b112cab80d68636184c0ddbec1d883d90c
diff --git a/services/tests/InputMethodSystemServerTests/src/com/android/server/inputmethod/InputMethodBindingControllerTest.java b/services/tests/InputMethodSystemServerTests/src/com/android/server/inputmethod/InputMethodBindingControllerTest.java
index 1e3b7e9..e552621 100644
--- a/services/tests/InputMethodSystemServerTests/src/com/android/server/inputmethod/InputMethodBindingControllerTest.java
+++ b/services/tests/InputMethodSystemServerTests/src/com/android/server/inputmethod/InputMethodBindingControllerTest.java
@@ -79,10 +79,8 @@
         // from system.
         synchronized (ImfLock.class) {
             mBindingController =
-                    new InputMethodBindingController(
-                            mInputMethodManagerService.getCurrentImeUserIdLocked(),
-                            mInputMethodManagerService, mImeConnectionBindFlags,
-                            mCountDownLatch);
+                    new InputMethodBindingController(mUserId, mInputMethodManagerService,
+                            mImeConnectionBindFlags, mCountDownLatch);
         }
     }