feat(spooler): Add last_peek value in the priority #14900

Job	Run time
Lint	2m 59s
Setup build metadata	1s
Lint Rust Default Features	1m 23s
Test (macos-latest)	2m 28s
Test All Features (ubuntu-latest)	3m 53s
Integration Tests	13m 30s
Test (windows-latest)	5m 8s
Test Python	1m 8s
Build Relay Binary (relay, x86_64-unknown-linux-gnu)	7m 40s
Build Docker Image (relay)	38s
Sentry-Relay Integration Tests	11m 21s
Publish Relay to DockerHub	0s
Publish Relay to GCR	0s
Upload build artifacts to gocd	0s
self-hosted-end-to-end	13m 2s
	1h 3m 11s

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