Fix test

Author: janfaracik

core/src/main/resources/lib/form/hetero-list.jelly

@@ -156,8 +156,10 @@ THE SOFTWARE.
     </div>
 
     <j:if test="${!readOnlyMode}">
-      <button type="button" class="jenkins-button hetero-list-add" menualign="${attrs.menuAlign}" suffix="${attrs.name}">${attrs.addCaption?:'%Add'}<l:icon src="symbol-chevron-down"/>
-      </button>
+      <span>
+        <button type="button" class="jenkins-button hetero-list-add" menualign="${attrs.menuAlign}" suffix="${attrs.name}">${attrs.addCaption?:'%Add'}<l:icon src="symbol-chevron-down"/>
+        </button>
+      </span>
     </j:if>
   </div>
 </j:jelly>

src/main/scss/form/_reorderable-list.scss

@@ -221,7 +221,7 @@ div.repeated-chunk {
   }
 }
 
-.repeated-chunk + .repeatable-insertion-point + .hetero-list-add {
+.repeated-chunk + .repeatable-insertion-point + span .hetero-list-add {
   margin-top: 1rem;
   transition: none;
 }