[Data] MongoDB insert and delete operations display an empty command

[lostintangent]

Repro steps:

1. Add an insert and/or delete operation for MongoDB into one of your app's routes
2. Run the app in order to exercise the insert/delete call
3. Open up the Glimpse client and select the respective request
4. Select the Data tab
5. Select the insert/delete operation

Expected: To see the data that was inserted or deleted from the DB Actual: The Command section is empty.

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