[Bug] Add webJob "stopping" status serialization and deserialization

[Sitaarz]

This PR resolves the issue where the 'Stopping', 'Disabling', 'Success' states were not handled in the WebJob status.
Fixes #49737

[github-actions]

Thank you for your contribution @Sitaarz! We will review the pull request and get back to you soon.

[Sitaarz]

I am new to being contributor. Any advices?

[Sitaarz]

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[azure-sdk]

API Change Check

APIView identified API level changes in this PR and created the following API reviews

Azure.ResourceManager.AppService

[ArthurMa1978]

Hey @Sitaarz , thank you for your contribution. Since the management plane SDK is generated from the Swagger spec, please update the corresponding Swagger spec to address this issue, and then regenerate the SDK accordingly.