GD-350: Spinner continues spinning after tests have stopped when debugging a single parameterised test

[ZodmanPerth]

The used Godot version:
v3.5.1.stable.official [6fed1ffa3]

OS including version:
Windows 11

Describe the bug
When debugging an individual parameterised test, if you stop execution before the end of the test run then the report shows that execution continues; the spinner keeps spinning and the individual test is shown in dark green.

Steps to Reproduce

1. Use the parameterised test function provided below
2. Run all tests
3. Put a breakpoint on the assert_bool line
4. Right-click one of the parameterised tests in the report window and select Debug Test
   
5. When the breakpoint is hit, stop the test with F8 or one of the UI stop buttons
6. Observe the spinner on the test being debugged continues to spin even though tests have stopped (and the test is still dark green) as though it was still executing
   

Minimal reproduction project:

func test_spinner(
	value : bool,
	expected : bool,
	test_parameters : Array = [
		[ true, true ],
		[ false, false ],
	]
):
	assert_bool(value).is_equal(expected)