Break the loop if a value was found when clicking an entry in the year selector.

Otherwise it can pick up the value of the date picker itself.

tp-date-picker.js

@@ -347,12 +347,13 @@ class TpDatePicker extends FormElement(LitElement) {
 
   selectYear(e) {
     const elList = e.composedPath();
-    elList.forEach(el => {
+    for (const el of elList) {
       if (el.value) {
         this.year = el.value;
         this.showYearSelector = false;
+        break;
       }
-    });
+    }
   }
 }