[Bug Fix] Multiple Bug Fixes (#1836)

* Fix the add file button on the multi-tools page.

* Fix a bug where the page numbers wouldn't be removed on page move on Firefox.

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Co-authored-by: kazandaki <ahmetfiratusta@gmail.com>

src/main/resources/static/js/multitool/PdfActionsManager.js

@@ -78,7 +78,7 @@ class PdfActionsManager {
     imgContainer.classList.toggle("split-before");
   }
 
-  setActions({ movePageTo, addPdfs, rotateElement }) {
+  setActions({ movePageTo, addFiles, rotateElement }) {
     this.movePageTo = movePageTo;
     this.addFiles = addFiles;
     this.rotateElement = rotateElement;