[Distributor] AusComp Connection: Replace "Check Settings" Error Message with Warning for Unsupported Credential Checks

Where in the platform does this apply?
Distributor Connections settings → distributor feed configuration for connection types that don't support credentials check (e.g., AusComp URL/token-based feeds) —

https://quote.signatureit.com.au/auth/profile/admin/distributors/connections

Current workflow / gap
When a customer clicks "Check settings" on a distributor connection that doesn't support credentials checking, the platform displays a red error message ("Error: This connection does not support credentials check..."). This is a normal, expected limitation of certain connection types, not an actual error — but the current styling and wording present it as a failure, which can confuse or alarm customers.

Proposed solution
Replace the error-styled message with a warning/informational banner (e.g., yellow or blue styling, non-error icon) for connection types that don't support credentials checking. The message content can remain largely the same (explaining that credentials can't be checked automatically and to verify manually after a few minutes), but should be visually and semantically distinct from a true error state.

Who would benefit?
All customers using distributor connections that lack credentials-check support (e.g., URL/token-based feeds like AusComp) — improves clarity and reduces unnecessary support tickets/confusion.