VSCE: Installing the extension does not update the Credential Manager

[zFernand0]

Describe the bug

When installing the VSCode Extension secrets-for-kubernetes, the expected configuration files didn't update.

Expected and actual results

Expected the .zowe/settings/imperative.json to be updated with the CredentialManager: "Secrets for Kubernetes" value.

Describe your environment

OS: Mac 14.5
VSCode: 1.91.1

Additional context

This was encountered when testing different scenarios in the following PR comment:

• feat: Leverage Imperative's event handling capabilities and more... zowe-explorer-vscode#2994 (comment)

[github-actions]

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