docs: add warning for msal ClientId

[rajamatt]

GitHub Issue (If applicable): #2356

PR Type

What kind of change does this PR introduce?

• Documentation content changes

What is the current behavior?

What is the new behavior?

PR Checklist

Please check if your PR fulfills the following requirements:

• Tested code with current supported SDKs
• Docs have been added/updated which fit documentation template. (for bug fixes / features)
• Unit Tests and/or UI Tests for the changes have been added (for bug fixes / features) (if applicable)
• Wasm UI Tests are not showing unexpected any differences. Validate PR Screenshots Compare Test Run results.
• Contains NO breaking changes
• Updated the Release Notes
• Associated with an issue (GitHub or internal)

Other information

Internal Issue (If applicable):

[agneszitte]

@Mergifyio backport release/stable/4.1

[mergify]

backport release/stable/4.1

✅ Backports have been created

• #2374 docs: add warning for msal ClientId (backport #2368) has been created for branch release/stable/4.1

[welcome]

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