Don't modify invariant device profile

We flag guard the code that modifies IDP as that's not needed with one
grid, and we don't want to modify idp outside of it

Bug: 332974074
Flag: com.android.launcher3.one_grid_specs
Test: verified manually with b&r
Change-Id: Ica2ffa79638fa693cde421adb13feebb0d09cbc4

src/com/android/launcher3/InvariantDeviceProfile.java

@@ -312,7 +312,7 @@ public class InvariantDeviceProfile {
                 context,
                 gridName,
                 displayInfo,
-                RestoreDbTask.isPending(mPrefs),
+                (RestoreDbTask.isPending(mPrefs) && !Flags.oneGridSpecs()),
                 mPrefs.get(FIXED_LANDSCAPE_MODE)
         );
 
@@ -505,6 +505,7 @@ public class InvariantDeviceProfile {
      * Updates the current grid, this triggers a new IDP, reloads the database and triggers a grid
      * migration.
      */
+    @VisibleForTesting
     public void setCurrentGrid(Context context, String newGridName) {
         mPrefs.put(GRID_NAME, newGridName);
         MAIN_EXECUTOR.execute(() -> {