Themes: allow to have a non-number type together with a unit

src/UI/InputElement/ValidatedInput.svelte

@@ -91,11 +91,6 @@
       return
     }
 
-    if (unit !== undefined && isNaN(Number(v))) {
-      value.setData(undefined)
-      return
-    }
-
     feedback?.setData(undefined)
     if (selectedUnit.data) {
       value.setData(unit.toOsm(v, selectedUnit.data))

src/UI/Popup/TagRendering/TagRenderingQuestion.svelte

@@ -178,6 +178,7 @@
           checkedMappings,
           tags.data
         )
+        console.log("Constructing change spec from", {freeform: $freeformInput, selectedMapping, checkedMappings, currentTags: tags.data}, " --> ", selectedTags)
       } catch (e) {
         console.error("Could not calculate changeSpecification:", e)
         selectedTags = undefined