[Glitch] Fix inability to paste links

Port c87b052829 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/features/compose/containers/compose_form_container.js

@@ -47,7 +47,6 @@ const processPasteOrDrop = (transfer, e, dispatch) => {
     try {
       const url = new URL(data);
       dispatch(pasteLinkCompose({ url }));
-      e.preventDefault();
     } catch {
       return;
     }