MacOS Keychain request prompts for "M" (or similar)

[Charles-Gagnon]

We should investigate why this is being listed as a single letter which isn't really helpful for understanding what STS is trying to access. Ideally it would have a more friendly name like "Connection Passwords" or similar.

[ttilberg]

This prompt has seemingly coming up a lot more frequently. The first few times I saw it, I did not trust it because of the nature of the ambiguous message (Confidential information stored in a or M).

Additionally when you browse through the keychain window, all my other listings appropriately identify themselves.

[stuartpa]

The credential is appearing to be named a single letter because SqlToolsService is writing the credential as UTF16 characters, so the M is the first character in the name which starts 'M i c r o s o f t'. The same issue exists with the secret, which means the secret cannot be displayed (or updated) with the Keychain UI (it also displays just the first character,