🐛 [open-formulieren/open-forms#4918] Pass initial_data_reference when redirecting to formstart

[stevenbal]

Closes open-formulieren/open-forms#4918

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.78%. Comparing base (c28288f) to head (400f735).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #754      +/-   ##
==========================================
+ Coverage   79.71%   79.78%   +0.06%     
==========================================
  Files         239      239              
  Lines        4980     4982       +2     
  Branches     1351     1359       +8     
==========================================
+ Hits         3970     3975       +5     
+ Misses        980      977       -3     
  Partials       30       30              

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[sergei-maertens]

Some polishing :)

[sergei-maertens]

you can use the findBy* queries, which are async (and basically put the waitFor inside the library

Suggested change

	await waitFor(() => {
	const loginLink = screen.getByRole('link', {name: buttonText});
	expect(loginLink).toHaveAttribute('href', expectedUrl);
	});
	const loginLink = await screen.findByRole('link', {name: buttonText});
	expect(loginLink).toHaveAttribute('href', expectedUrl);