Simplify/cleanup ApiQueryMapDataTest implementation
Simplify/cleanup ApiQueryMapDataTest implementation

Bug: T294734
Change-Id: Ic0ec32991c4108ad2c9f7225807c3ac0dca8ec18

wikimedia/mediawiki-extensions-Kartographer,wikimedia/mediawiki-extensions-Kartographer,wikimedia/mediawiki-extensions-Kartographer