trigger document update on importing variables

[akshay-gupta7]

Why does this PR exist?

Closes #3664

What does this pull request do?

This PR ensures that a document update is triggered each time variables are imported. This guarantees that the document state remains consistent and up to date after the import operation.

Testing this change

1. Open the plugin and import new variables.
2. Verify that the document is immediately updated to reflect the imported variables.
3. Close the plugin and reopen to see the new/updated tokens

Additional Notes (if any)

[changeset-bot]

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Latest commit: b49ef50

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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[github-actions]

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