fix(smus): update space before creating new app if space setting is changed

[kzr-at-amazon]

Problem

• Upgrading Space from Toolkit from ml.t3.medium to ml.t3.large does not update the Space properties. It only creates a new app with the updated instance type.

Solution

• Make sure to update Space before creating App when it is needed

---

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[amazon-inspector-ohio]

⏳ I'm reviewing this pull request for security vulnerabilities and code quality issues. I'll provide an update when I'm done

[github-actions]

• This pull request implements a feat or fix, so it must include a changelog entry (unless the fix is for an unreleased feature). Review the changelog guidelines.
  • Note: beta or "experiment" features that have active users should announce fixes in the changelog.
  • If this is not a feature or fix, use an appropriate type from the title guidelines. For example, telemetry-only changes should use the telemetry type.

[amazon-inspector-ohio]

✅ I finished the code review, and didn't find any security or code quality issues.

[vpbhargav]

Can we make these checks case insensitive just to be safe? Just lowercase everything and then check. And while it works now to do an either condition, it will break if a new AppType gets added for example. So lets just keep a mapping of JuypyterLab: JupyterLabAppSettings, CodeEditor : CodeEditorAppSettings

[kzr-at-amazon]

It is fixed. Used a map for App specific setting name, and used AppType for app types.

[vpbhargav]

If there were other values in DefaultResourceSpec already (eg - ImageArn), would this overwrite it or leave it as is and only update instance type?
If it overwrites, that is not the behavior we want, we should only be updating instance type and not the other params.

[kzr-at-amazon]

Ignore this and create a new PR