Add global::meter_provider_shutdown #4521

Job	Run time
external-types (opentelemetry)	1m 0s
external-types (opentelemetry-sdk)	1m 10s
external-types (opentelemetry-otlp)	1m 14s
external-types (opentelemetry-zipkin)	1m 11s
lint	2m 13s
msrv	2m 13s
non-default-examples (opentelemetry-otlp/examples/basic-otlp)	37s
test (stable)	8m 1s
test (beta)	6m 45s
cargo-deny	25s
coverage	3m 25s
docs	1m 26s
	29m 40s

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