refactor(entity): migrate unit tests to Vitest

[gabrielguerrero]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/ngrx/platform/blob/main/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Documentation has been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[x] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Other... Please describe:

What is the current behavior?

entity module has test using jest

Closes #
#5023

What is the new behavior?

now entity module will use vitest

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[netlify]

✅ Deploy Preview for ngrx-io canceled.

Built without sensitive environment variables

Name	Link
🔨 Latest commit	8378f17
🔍 Latest deploy log	https://app.netlify.com/projects/ngrx-io/deploys/6932ba2a2c0c260008ed3a4f

[netlify]

✅ Deploy Preview for ngrx-site-v19 ready!

Name	Link
🔨 Latest commit	8378f17
🔍 Latest deploy log	https://app.netlify.com/projects/ngrx-site-v19/deploys/6932ba2ab9130200082575c9
😎 Deploy Preview	https://deploy-preview-5030--ngrx-site-v19.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify project configuration.

[gabrielguerrero]

Hey @timdeschryver thanks for fixing the build

[exequiel09]

I guess I need to wait on this PR for the CI of #5035 to be fixed

[timdeschryver]

I've added skip-nx-cache because the build was failing, I think it's fine to leave it like that.