Flaky test in otelconf TestPrometheusReaderConfigurationOptions

[dmathieu]

--- FAIL: TestPrometheusReaderConfigurationOptions (0.07s)
    metric_test.go:1219: 
        	Error Trace:	D:/a/opentelemetry-go-contrib/opentelemetry-go-contrib/otelconf/v0.2.0/metric_test.go:1219
        	            				C:/hostedtoolcache/windows/go/1.24.0/x64/src/testing/testing.go:1211
        	            				C:/hostedtoolcache/windows/go/1.24.0/x64/src/testing/testing.go:1445
        	            				C:/hostedtoolcache/windows/go/1.24.0/x64/src/testing/testing.go:1786
        	Error:      	Received unexpected error:
        	            	context canceled
        	Test:       	TestPrometheusReaderConfigurationOptions

See https://github.com/open-telemetry/opentelemetry-go-contrib/actions/runs/19272107874/job/55102797565?pr=8162

[dmathieu]

cc @sonalgaud12 this test was recently introduced in your PR #7440

[sonalgaud12]

Hey @dmathieu,
When I was working on the test earlier, I ran into a linting error because context.Background() was used (it seems that was from an older version), so I updated it to use t.Context().

I see you’ve already addressed it in your changes. Is there anything I can help with to get it resolved ?

[dmathieu]

Yeah, sorry, I missed that when reviewing your PR. We can't use t.Context() in tests cleanups, as the context can have been canceled.

No, the PR only needs approvals.

[sonalgaud12]

Thank you for letting me know, I will keep that in mind in my future prs.