[CMDCT-3172] Convert EntityProvider to Zustand

[karla-vm]

Description

This covers the last part of our ✨ #mcrZustandification ✨ by converting the EntityProvider to Zustand. Some of these changes include refactoring decisions that were made while building out MFP.

Related ticket(s)

CMDCT-3172

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How to test

There should be no changes in terms of functionality, so to test this, you should go through a MCPAR and MLR reports and be able to submit without any problems w/ entities.

Notes

N/A

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Pre-review checklist

• I have added thorough tests, if necessary
• I have updated relevant documentation, if necessary
• I have performed a self-review of my code
• I have manually tested this PR in the deployed cloud environment

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Pre-merge checklist

Review

• Design: This work has been reviewed and approved by design, if necessary
• Product: This work has been reviewed and approved by product owner, if necessary

Security

If either of the following are true, notify the team's ISSO (Information System Security Officer).

• These changes are significant enough to require an update to the SIA.
• These changes are significant enough to require a penetration test.

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convert to a different template: test → val | val → prod

[gmrabian]

looks good

[jessabean]

Looks good to me!

[codeclimate]

Code Climate has analyzed commit 930015e and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 85.7% (90% is the threshold).

This pull request will bring the total coverage in the repository to 95.8% (-0.1% change).

View more on Code Climate.