fix(sagemaker): skip over domains with errors

[chuanzgh]

Problem

In an account with multiple SageMaker Studio domains, the extension errors out if the user only have access to some but not all domains.

Solution

For domains that throw exception, swallow the exceptions so that all the domains can be iterated through.

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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 modifies code in src/* but no tests were added/updated.
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[amazon-inspector-ohio]

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