Fix monetary device class state display with non-ISO 4217 currency symbols (#29887)

src/common/entity/compute_state_display.ts

@@ -133,9 +133,10 @@ const computeStateToPartsFromEntityAttributes = (
           ),
         });
       } catch (_err) {
-        // fallback to default
+        // fallback to default numeric formatting below
       }
 
+      if (parts.length) {
         const TYPE_MAP: Record<string, ValuePart["type"]> = {
           integer: "value",
           group: "value",
@@ -158,9 +159,9 @@ const computeStateToPartsFromEntityAttributes = (
             valueParts.push({ type, value: part.value });
           }
         }
-
         return valueParts;
       }
+    }
 
     // default processing of numeric values
     const value = formatNumber(