Fix a bug where `PURPOSE_BUGFIX` was added to wrong flag

ag/26027892 added `PURPOSE_BUGFIX` to `enable_tablet_two_pane_picker_v2`, instead it should be added to `enable_add_app_widget_via_config_activity_v2`

Flag: aconfig enable_add_app_widget_via_config_activity_v2 DISABLED
Test: NONE
Bug: 284236964
Change-Id: I55ac6ae0f3af7ab1ed239ac11a04dd59eaf95c4a
1 file changed