Revert "Only apply server visible to split screen"

This reverts commit 32027abac9.

Reason for revert: Breaks bubbles :-(

Bug: 158447971
Bug: 159808754
Change-Id: I82c316b4ebb420a3b34a7f68c6a47205c4c22d06

services/core/java/com/android/server/wm/InsetsSourceProvider.java

@@ -351,13 +351,9 @@ class InsetsSourceProvider {
     }
 
     private void updateVisibility() {
-        // TODO(b/159699383): remove the client controlled check when the insets visibility can be
-        //                    driven by the system UI.
         final boolean isClientControlled = mControlTarget != null
                 && mControlTarget.isClientControlled();
-        mSource.setVisible(mServerVisible
-                && ((!isClientControlled && mDisplayContent.inMultiWindowMode())
-                    || mClientVisible));
+        mSource.setVisible(mServerVisible && (!isClientControlled || mClientVisible));
         ProtoLog.d(WM_DEBUG_IME,
                 "InsetsSource updateVisibility serverVisible: %s clientVisible: %s",
                 mServerVisible, mClientVisible);