Revert "[User Switcher] Dismiss dialog when launch"

This reverts commit cbbef45daf.

Reason for revert: b/237424596

Change-Id: I601f2ad4d40ca9b379cb757d033641fce5fa2819

packages/SystemUI/src/com/android/systemui/qs/user/UserSwitchDialogController.kt

@@ -95,7 +95,9 @@ class UserSwitchDialogController @VisibleForTesting constructor(
                         getButton(BUTTON_NEUTRAL)
                     )
 
-                    dismiss()
+                    if (controller == null) {
+                        dismiss()
+                    }
 
                     activityStarter.postStartActivityDismissingKeyguard(
                         USER_SETTINGS_INTENT, 0, controller

packages/SystemUI/tests/src/com/android/systemui/qs/user/UserSwitchDialogControllerTest.kt

@@ -139,7 +139,6 @@ class UserSwitchDialogControllerTest : SysuiTestCase() {
         `when`(dialog.getButton(DialogInterface.BUTTON_NEUTRAL)).thenReturn(neutralButton)
 
         clickCaptor.value.onClick(dialog, DialogInterface.BUTTON_NEUTRAL)
-        verify(dialog).dismiss()
 
         verify(activityStarter)
             .postStartActivityDismissingKeyguard(