(fix) Add unique key prop to field component instances

[samuelmale]

Requirements

• This PR has a title that briefly describes the work done including the ticket number. If there is a ticket, make sure your PR title includes a conventional commit label. See existing PR titles for inspiration.
• My work conforms to the OpenMRS 3.0 Styleguide and design documentation.
• My work includes tests or is validated by existing tests.

Summary

This PR ensures that FieldComponent instances are properly identified and managed by React, preventing potential rendering issues. Specifically, it addresses a recently reported issue where ui-select-ext instances were rendering incorrectly and switching data sources.

Screenshots

Issue:

Screen.Recording.2024-06-18.at.6.48.40.PM.mov

Fixed:

Related Issue

Other

[github-actions]

Size Change: +14 B (0%)

Total Size: 1.05 MB

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[samuelmale]

I've also filed a ticket about the ui-select-ext instance loosing state: https://openmrs.atlassian.net/browse/O3-3448

[arodidev]

Thanks @samuelmale shouldn't we do the same for the field components within obsGroups?

[samuelmale]

@arodidev done!

[arodidev]

LGTM @samuelmale