Separate connector definition update from the config import

[tuliren]

Tell us about the problem you're trying to solve

• Currently we automatically update connector definition when a config archive is imported.
• This makes the code very complicated. Also we probably want to update the connector definitions more frequently.

Describe the solution you’d like

• Move the update logic out of the config import process.
• Maybe implement automatic update in the server.

Describe the alternative you’ve considered or used

N/A

Additional context

N/A

Are you willing to submit a PR?

Yes.

[tuliren]

Can use the new DatabaseConfigPersistence#loadData method introduced in #5678 to update the connector definitions.