(test) Refactor tests for the Form component

[denniskigen]

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 refactors tests for the Form component with the primary goal of reducing reliance on async behaviour and the use of asynchronous matchers. Consequently, the test suite should be easier to read and reason about. In most cases, rendering the component, allowing some time for the asynchronous behaviour to occur, and then checking for the disappearance of the loading spinner should be enough to allow asynchronous operations to complete.

In the few cases where the delay is insufficient and more time is required for async operations to complete, I've queued up the render using:

await act(async () => {
  renderForm(null, obsGroupTestForm);
});

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[github-actions]

Size Change: +13 B (0%)

Total Size: 1.06 MB

ℹ️ View Unchanged

Filename	Size	Change
dist/100.js	2.41 kB	0 B
dist/225.js	2.57 kB	0 B
dist/29.js	169 kB	0 B
dist/327.js	1.58 kB	0 B
dist/353.js	3.02 kB	0 B
dist/402.js	237 kB	+13 B (0%)
dist/459.js	6.07 kB	0 B
dist/505.js	6.95 kB	0 B
dist/540.js	2.63 kB	0 B
dist/606.js	2.23 kB	0 B
dist/616.js	202 kB	0 B
dist/791.js	9.8 kB	0 B
dist/859.js	830 B	0 B
dist/886.js	6.59 kB	0 B
dist/942.js	482 B	0 B
dist/981.js	85.7 kB	0 B
dist/993.js	3.08 kB	0 B
dist/main.js	311 kB	0 B
dist/openmrs-form-engine-lib.js	3.57 kB	0 B

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[samuelmale]

LGTM @denniskigen 🍺