fix(frontend): fix share brain (#2238)

# Description

Please include a summary of the changes and the related issue. Please
also include relevant motivation and context.

## Checklist before requesting a review

Please delete options that are not relevant.

- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my code
- [ ] I have commented hard-to-understand areas
- [ ] I have ideally added tests that prove my fix is effective or that
my feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged

## Screenshots (if appropriate):

frontend/lib/components/UserToInvite.tsx

@@ -26,11 +26,16 @@ export const UserToInvite = ({
   const [email, setEmail] = useState(roleAssignation.email);
 
   useEffect(() => {
-    onChange({
-      ...roleAssignation,
-      email,
-      role: selectedRole,
-    });
+    if (
+      email !== roleAssignation.email ||
+      selectedRole !== roleAssignation.role
+    ) {
+      onChange({
+        ...roleAssignation,
+        email,
+        role: selectedRole,
+      });
+    }
   }, [email, onChange, roleAssignation, selectedRole]);
 
   const assignableRoles = userRoleToAssignableRoles["Owner"];