Remove dismiss button from permission dialog

Bug: 171067302
Test: Manually
Change-Id: I6173090dcf8e5a1c1297f5459bf369ac402556e3
diff --git a/src/com/android/permissioncontroller/permission/ui/auto/GrantPermissionsAutoViewHandler.java b/src/com/android/permissioncontroller/permission/ui/auto/GrantPermissionsAutoViewHandler.java
index 1d471f2..c7034b7 100644
--- a/src/com/android/permissioncontroller/permission/ui/auto/GrantPermissionsAutoViewHandler.java
+++ b/src/com/android/permissioncontroller/permission/ui/auto/GrantPermissionsAutoViewHandler.java
@@ -113,8 +113,7 @@
         AlertDialogBuilder builder = new AlertDialogBuilder(mContext)
                 .setTitle(mGroupMessage)
                 .setSubtitle(mDetailMessage)
-                .setNegativeButton(R.string.grant_dialog_button_dismiss, (dialog, which) ->
-                        dialog.dismiss())
+                .setAllowDismissButton(false)
                 .setOnDismissListener((dialog) -> {
                     mDialog = null;
                     mResultListener.onPermissionGrantResult(mGroupName, DENIED);