[Glitch] Fix page refresh when trying to save custom profile fields

Port b40eed5e3c016184784835d522450444edc95d06 to glitch-soc

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

app/javascript/flavours/glitch/features/ui/components/confirmation_modals/confirmation_modal.tsx

@@ -60,13 +60,18 @@ export const ConfirmationModal: React.FC<
   noCloseOnConfirm = false,
   noFocusButton = false,
 }) => {
-  const handleClick = useCallback(() => {
-    if (!noCloseOnConfirm) {
-      onClose();
-    }
+  const handleSubmit = useCallback<React.SubmitEventHandler<HTMLFormElement>>(
+    (e) => {
+      e.preventDefault();
 
-    void onConfirm();
-  }, [onClose, onConfirm, noCloseOnConfirm]);
+      if (!noCloseOnConfirm) {
+        onClose();
+      }
+
+      void onConfirm();
+    },
+    [onClose, onConfirm, noCloseOnConfirm],
+  );
 
   const handleSecondary = useCallback(() => {
     onClose();
@@ -74,7 +79,7 @@ export const ConfirmationModal: React.FC<
   }, [onClose, onSecondary]);
 
   return (
-    <ModalShell onSubmit={handleClick}>
+    <ModalShell onSubmit={handleSubmit}>
       <ModalShellBody className={className}>
         {noFocusButton ? (
           <NavigationFocusTarget as='h1' id={titleId}>
@@ -115,7 +120,6 @@ export const ConfirmationModal: React.FC<
         {/* eslint-disable jsx-a11y/no-autofocus -- we are in a modal and thus autofocusing is justified */}
         <Button
           type='submit'
-          onClick={handleClick}
           loading={updating}
           disabled={disabled}
           autoFocus={!noFocusButton}