Simplify `removeData`

[mxdvl]

What are you changing?

• ensure that undefined values default to an empty array so we do not need to check if they are defined.

Why?

• simpler code, less variations to handle
• less code sent over the wire

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 8418fc65f1d134953a07d1c63b94823ac8ce149a

The changes in this PR will be included in the next version bump.

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[github-actions[bot]]

[!TIP] Once this PR is ready to go, add the run_chromatic label to run the Chromatic tests.

This saves us a lot of money by not running the tests before we need them.