UX: center "data is loading" when adding a new point

src/UI/Popup/AddNewPoint/AddNewPoint.svelte

@@ -78,7 +78,7 @@
 
   const isLoading = state.dataIsLoading
   let preciseCoordinate: UIEventSource<{ lon: number; lat: number }> = new UIEventSource(undefined)
-  let snappedToObject: UIEventSource<WayId> = new UIEventSource<string>(undefined)
+  let snappedToObject: UIEventSource<WayId> = new UIEventSource<WayId>(undefined)
 
   // Small helper variable: if the map is tapped, we should let the 'Next'-button grab some attention as users have to click _that_ to continue, not the map
   let preciseInputIsTapped = false
@@ -172,11 +172,13 @@
         <Tr t={Translations.t.general.add.zoomInFurther} />
       </div>
     {:else if $isLoading}
+      <div class="w-full h-full p-2 flex items-center justify-center">
       <div class="alert">
         <Loading>
           <Tr t={Translations.t.general.add.stillLoading} />
         </Loading>
       </div>
+      </div>
     {:else if selectedPreset === undefined}
       <!-- First, select the correct preset -->
       <PresetList
@@ -285,7 +287,6 @@
         {/if}
         <TagHint
           embedIn={(tags) => t.presetInfo.Subs({ tags })}
-          {state}
           tags={new And(selectedPreset.preset.tags)}
         />