fix: ElementQuery#last() throws correct exception type

vaadin-testbench-core/src/test/java/com/vaadin/testbench/ElementQueryTest.java

@@ -810,4 +810,19 @@ public void attributeNotExistAttributeAnnotationWords() {
     private <T> Set<T> set(T... ts) {
         return Set.of(ts);
     }
+
+    @Test(expected = NoSuchElementException.class)
+    public void first_throwsNoSuchElementException_whenNoElements() {
+        createExampleElementQuery().first();
+    }
+
+    @Test(expected = NoSuchElementException.class)
+    public void last_throwsNoSuchElementException_whenNoElements() {
+        createExampleElementQuery().last();
+    }
+
+    @Test(expected = NoSuchElementException.class)
+    public void get_throwsNoSuchElementException_whenNoElements() {
+        createExampleElementQuery().get(0);
+    }
 }

vaadin-testbench-shared/src/main/java/com/vaadin/testbench/ElementQuery.java

@@ -1241,6 +1241,9 @@ public T waitForFirst(long timeOutInSeconds) {
      */
     public T last() {
         List<T> all = all();
+        if (all.isEmpty()) {
+            throw new NoSuchElementException(getNoSuchElementMessage(null));
+        }
         return all.get(all.size() - 1);
     }