feat(upload): Support deferred upload lengths #23332

Job	Run time
Test Python	1m 8s
Lint Rust Default Features	6m 19s
detect what files changed	5s
Setup build metadata	4s
Test (windows-latest)	16m 57s
Build Internal Relay Binary (relay, x86_64-unknown-linux-gnu)	13m 11s
Lint	7m 47s
Test (macos-latest)	8m 2s
Test All Features (ubuntu-latest)	10m 4s
Integration Tests	15m 4s
Build Relay Binary (relay, x86_64-unknown-linux-gnu)	13m 32s
validate-devservices-config	0s
Publish Relay to Internal AR	0s
Upload build artifacts to gocd	0s
Build Docker Image (relay)	48s
self-hosted-end-to-end	16m 49s
Sentry-Relay Integration Tests	12m 40s
Publish Relay to GCR	0s
	2h 2m 30s

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