Flaky test: TestMinimizeSpreadTokenGenerator

[danielblando]

Describe the bug

--- FAIL: TestMinimizeSpreadTokenGenerator (6.95s)
    token_generator_test.go:202: 
        	Error Trace:	/__w/cortex/cortex/pkg/ring/token_generator_test.go:202
        	            				/__w/cortex/cortex/pkg/ring/token_generator_test.go:106
        	Error:      	Condition failed!
        	Test:       	TestMinimizeSpreadTokenGenerator
        	Messages:   	[minimize-22-zone1] expected and real distance error is greater than 0.01 -> 0.010537365786974728[8.2595524e+07/8.3475132e+07]
FAIL

Noticed here:
https://github.com/cortexproject/cortex/actions/runs/13140596180/job/36666597646

Expected behavior
No error