Notification Subscription Error Handling and Unsubscribe Message Mismatch

[Mahendar0701]

Describe the bug
In the notification section, when the Subscribe button is clicked, the site requests user permission. If the user closes the permission prompt by clicking 'X', an error message stating "permission denied" should be displayed. Currently, instead of showing this error, the subscribe button continues to load indefinitely, even after the API rejection response is received. Additionally, when the Unsubscribe button is clicked, the notification message displayed is not relevant to the action.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'Notifications'
2. Click on 'Subscribe'
3. Close the permission prompt by clicking the 'X' button.
4. Observe that the error message "permission denied" is not displayed; instead, the subscribe button continues to load.
5. Click on Unsubscribe and notice that the notification message displayed is not relevant.

Expected behavior

1. When the permission prompt is closed by the user, an error message saying "permission denied" should be shown.
2. The Subscribe button should stop loading once the API rejection response is received.
3. When Unsubscribe is clicked, an appropriate and relevant notification message should be displayed.

Screenshots

Subscribe issue

Irrelevant Notification Message on clicking unsubscribe:

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
Add any other context about the problem here.

[Mahendar0701]

@rithviknishad @nihal467 i want to work on this