fix(tasks): don't lowercase users when searching in the assignee menu

[pedrobonamin]

Description

When searching for users in the tasks plugin, we are using lodash deburr to convert all the letters to latin letters. Also, we lowercase the display name.
This, was going all the way to the UI, which should not happen.
This PR addresses that, by introducing a new property searchName when searching for users to avoid modifying the names that will be displayed in the UI.

What to review

Testing

Notes for release

Fixes an issue in which user names displayed in the user selection dropdown inside tasks were changing when filtering

[vercel]

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Name	Status	Preview	Updated (UTC)
performance-studio	✅ Ready (Inspect)	Visit Preview	Mar 27, 2024 2:32pm
test-studio	✅ Ready (Inspect)	Visit Preview	Mar 27, 2024 2:32pm

1 Ignored Deployment

Name	Status	Preview	Updated (UTC)
studio-workshop	⬜️ Ignored (Inspect)		Mar 27, 2024 2:32pm

[github-actions]

No changes to documentation

[github-actions]

Component Testing Report Updated Mar 27, 2024 2:41 PM (UTC)

File	Status	Duration	Passed	Skipped	Failed
comments/CommentInput.spec.tsx	✅ Passed (Inspect)	37s	15	0	0
formBuilder/ArrayInput.spec.tsx	✅ Passed (Inspect)	6s	3	0	0
formBuilder/inputs/PortableText/Annotations.spec.tsx	✅ Passed (Inspect)	11s	3	0	0
formBuilder/inputs/PortableText/copyPaste/CopyPaste.spec.tsx	✅ Passed (Inspect)	13s	4	2	0
formBuilder/inputs/PortableText/Decorators.spec.tsx	✅ Passed (Inspect)	13s	6	0	0
formBuilder/inputs/PortableText/FocusTracking.spec.tsx	✅ Passed (Inspect)	32s	15	0	0
formBuilder/inputs/PortableText/Input.spec.tsx	✅ Passed (Inspect)	1m 0s	15	0	0
formBuilder/inputs/PortableText/ObjectBlock.spec.tsx	✅ Passed (Inspect)	1m 2s	18	0	0
formBuilder/inputs/PortableText/RangeDecoration.spec.tsx	✅ Passed (Inspect)	12s	6	0	0
formBuilder/inputs/PortableText/Styles.spec.tsx	✅ Passed (Inspect)	14s	6	0	0
formBuilder/inputs/PortableText/Toolbar.spec.tsx	✅ Passed (Inspect)	20s	9	0	0

[hermanwikner]

👍