Merge "Pass Executor to to PluginInstanceManager.Factory." into sc-v2-dev am: d72a60f953

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15558873

Change-Id: I23f99561eecd0d2f705d5a2166b9e1e17aa7666a