feat(NODE-6252): insertMany and bulkWrite permit readonly arrays

[nbbeeken]

Description

What is changing?

• insertMany and bulkWrite on the Collection class accept readonly arrays

Is there new documentation needed for these changes?

No

What is the motivation for this change?

Readonly data structures in TS can be narrowed and index checked, improving DX.

Release Highlight

insertMany and bulkWrite accept ReadonlyArray inputs

This improves the typescript developer expirence, developers tend to use ReadonlyArray because it can help understand where mutations are made and when enabling noUncheckedIndexedAccess leads to a better type narrowing expirence.

Please note, that the array is readonly but not the documents, the driver adds _id fields to your documents unless you request that the server generate the _id with forceServerObjectId

Double check the following

• Ran npm run check:lint script
• Self-review completed using the steps outlined here
• PR title follows the correct format: type(NODE-xxxx)[!]: description
  • Example: feat(NODE-1234)!: rewriting everything in coffeescript
• Changes are covered by tests
• New TODOs have a related JIRA ticket