Multiple grievance created when clicking create grievance multiple times.

[Sanjil-rumsan]

• [ ] When Creating Grievance need to click Create Grievance multiple times to create grievance and when clicked multiple times, multiple grievance is created.
• [ ] Disable or show loader in Create Grievance button once admin clicks Create Grievance with all valid required fields. Video Link: https://jam.dev/c/e7647079-4a52-46b0-9d8d-e536a3480ae2