[BUG] Connection details are listed in existing connection even for a failed connection

[sathvik-palley]

Describe the bug
When attempting to establish a database connection that fails, the connection details are still being added to the existing connections list despite the connection failure.

To Reproduce
Steps to reproduce the behavior:

• Go to connection setup/configuration
• Enter invalid connection details (wrong host, credentials, etc.)
• Attempt to connect to the database
• Observe connection failure/error message
• Check existing connections list
• See that the failed connection details are still listed

Expected behavior
Failed connections should not be added to the existing connections list. Only successful connections should appear in the connections list. We can have a failed connections section since 'Edit Connection' functionality is already in development.

Additional context
This creates confusion for users as they may see non-functional connections in their list and attempt to use them repeatedly. It also clutters the connections interface with invalid entries.

[saivennela20]

Hello, I can work on it.

[sathvik-palley]

Hello, I can work on it.

Feel free to work on it! I will go ahead and assign it to you.