An error occurs when executing "Disconnect from Repo..." action for Slots

[v-meilei]

OS: Win 11 Build Version: 20241014.1 Regression: Not a Regression

Repro Steps:

1. Expand a Function App -> Right-click "Slots" -> Select "Create slot..." -> Give a name and then press "Enter" key.
2. Right-click the slot -> Click "Configure Deployment Source..." -> Select "LocalGit".
3. Expand the slot -> Right-click "Deployments" node -> Select "Disconnect from Repo...".
4. Check whether succeeds to execute "Disconnect from Repo..." action or not.

Expect: Succeed to execute "Disconnect from Repo..." action.

Actual: An error occurs.

More Info:

1. This issue also reproduces when selecting the "GitHub" for "Configure Deployment Source...".
2. This issue doesn't reproduce on function app.
3. There is a known fixed bug for function app: https://github.com/microsoft/vscode-azurefunctions/issues/3136.