GD-237: Flaky-Test: SceneRunnerTest.cs

[MikeSchulze]

SceneRunnerTest.cs fails by

Description

	Run Test: /__w/gdUnit3/gdUnit3/addons/gdUnit3/test/core/SceneRunnerTest.cs > AwaitMethod_withTimeFactor :STARTED
color_cycle
timer1
timer2
cycle end
color_cycle
timer1
timer2
cycle end
color_cycle
timer1
	Run Test: /__w/gdUnit3/gdUnit3/addons/gdUnit3/test/core/SceneRunnerTest.cs > AwaitMethod_withTimeFactor :PASSED 532ms
FAILED 8s 859ms
	| 250 total | 0 error | 2 failed | 0 skipped | 0 orphans |

https://github.com/MikeSchulze/gdUnit3/runs/6606156552#r0s86

Acceptance criteria

Test must be success