Multiple flag fix (#1742)

* fix

* multiple file logic cleanup

* fix

---------

Co-authored-by: a <a>

src/main/resources/templates/misc/remove-annotations.html

@@ -18,7 +18,7 @@
               </div>
               <form id="pdfForm" class="mb-3">
                 <div class="custom-file">
-                  <div th:replace="~{fragments/common :: fileSelector(name='fileInput', multiple=false, accept='application/pdf', remoteCall='false')}"></div>
+                  <div th:replace="~{fragments/common :: fileSelector(name='fileInput', multipleInputsForSingleRequest=false, accept='application/pdf', remoteCall='false')}"></div>
                 </div>
                 <button type="submit" id="submitBtn" class="btn btn-primary" th:text="#{removeAnnotations.submit}"></button>
               </form>