Purpose

Preventing crash when inserting xml dyn graph files into workspace.
I've added some validations so when we are trying to insert a xml dyn file graph without notes, inserting doesn't crash (otherwise the graph is not added).

Declarations

Check these if you believe they are true

• The codebase is in a better state after this PR
• Is documented according to the standards
• The level of testing this PR includes is appropriate
• User facing strings, if any, are extracted into *.resx files
• All tests pass using the self-service CI.
• Snapshot of UI changes, if any.
• Changes to the API follow Semantic Versioning and are documented in the API Changes document.
• This PR modifies some build requirements and the readme is updated
• This PR contains no files larger than 50 MB

Release Notes

Preventing crash when inserting xml dyn graph files into workspace.

Reviewers

@QilongTang @reddyashish

FYIs