feat(spans): only extract user.geo.subregion if mobile or frontend project #15292

Job	Run time
Test All Features (ubuntu-latest)	3m 27s
Test (macos-latest)	2m 43s
Lint	3m 29s
Test (windows-latest)	4m 49s
Setup build metadata	1s
Lint Rust Default Features	1m 31s
Integration Tests	12m 35s
Test Python	1m 0s
Build Relay Binary (relay, x86_64-unknown-linux-gnu)	8m 35s
Build Docker Image (relay)	28s
Publish Relay to DockerHub	0s
self-hosted-end-to-end	13m 19s
Publish Relay to GCR	0s
Sentry-Relay Integration Tests	11m 32s
Upload build artifacts to gocd	0s
	1h 3m 29s

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