Merge pull request #19180 from overleaf/dp-numpad-plus

Add + key to pdf zoom shortcut so that numpad + key works

GitOrigin-RevId: 2080c876b7a5c6810ebb170b1451d62158ea2f31

services/web/frontend/js/features/pdf-preview/components/pdf-js-viewer.tsx

@@ -446,6 +446,7 @@ function PdfJsViewer({ url, pdfFile }: PdfJsViewerProps) {
       }
       if (event.metaKey || event.ctrlKey) {
         switch (event.key) {
+          case '+':
           case '=':
             event.preventDefault()
             setZoom('zoom-in')