Do not destroy CustomTile when in QSCustomizer

Before this CL, TileQueryHelper would create CustomTile when creating
tiles for current tiles. This caused them to be destroyed after taking
the information and being removed from the maps in TileServices.

In this CL, current CustomTile are fixed to only being created by
addPackageTiles which knows what to do.

Fixes: 148002667
Fixes: 127508346
Test: manual
Test: atest TileQueryHelperTest
Change-Id: I2c4d3ce6c31449f20670982dad334019cc25469c