Fix OpenTelemetry graceful shutdown. #10209

Job	Run time
YAML Lint	16s
Rego PR checks	1m 30s
Generate Code	1m 10s
Go Lint	1m 44s
Go Build (linux amd64)	2m 30s
Check Generated	23s
Go Build (linux arm64)	2m 10s
Go compat build/test (ubuntu-22.04, 1.20)	4m 8s
Go Test (linux)	4m 23s
Go Build (linux arm64GO_TAGS="-tags=opa_no_oci")	2m 3s
Go compat build/test (macos-14, 1.20)	5m 2s
Go Test (darwin)	4m 14s
Go Build (windows amd64)	2m 51s
Go Race Detector	6m 6s
WASM	10s
Go Build (darwin amd64)	56s
Go Build (darwin arm64)	37s
smoke-test-binaries (linux, ubuntu-22.04, opa_linux_amd64, amd64)	17s
docker image smoke test	31s
smoke-test-binaries (linux, ubuntu-22.04, opa_linux_amd64_static, amd64, disabled)	11s
smoke-test-binaries (darwin, macos-13, opa_darwin_amd64, amd64)	30s
smoke-test-binaries (darwin, macos-14, opa_darwin_arm64_static, arm64, disabled)	14s
smoke-test-binaries (windows, windows-latest, opa_windows_amd64.exe, amd64)	37s
	42m 33s

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