[Flaky Test] TestAdaptiveCalculator/Additive_increase_multiple_limits_until_a_backoff_event_with_multiple_watchers

Flaky test in https://gitlab.com/gitlab-org/gitaly/-/jobs/4723828174:

=== FAIL: internal/limiter TestAdaptiveCalculator/Additive_increase_multiple_limits_until_a_backoff_event_with_multiple_watchers (0.02s)
    adaptive_calculator_test.go:568: 
        	Error Trace:	/builds/gitlab-org/gitaly/internal/limiter/adaptive_calculator_test.go:568
        	Error:      	Not equal: 
        	            	expected: []int{25, 26, 27, 13, 14, 15, 16, 17, 18, 10, 11}
        	            	actual  : []int{25, 26, 27, 28, 14, 15, 16, 17, 18, 19, 10}
        	            	
        	            	Diff:
        	            	--- Expected
        	            	+++ Actual
        	            	@@ -4,3 +4,3 @@
        	            	  (int) 27,
        	            	- (int) 13,
        	            	+ (int) 28,
        	            	  (int) 14,
        	            	@@ -10,4 +10,4 @@
        	            	  (int) 18,
        	            	- (int) 10,
        	            	- (int) 11
        	            	+ (int) 19,
        	            	+ (int) 10
        	            	 }
        	Test:       	TestAdaptiveCalculator/Additive_increase_multiple_limits_until_a_backoff_event_with_multiple_watchers

Steps

• This issue has been assigned the current milestone
• Flaky test has been quarantined with testhelper.SkipQuarantinedTest.
• Flaky test has been fixed and quarantine removed.