LSIF: stale data in caches

Created by: chrismwendt

(This doesn't repro anymore because I restarted the lsif-server container)

• Visit https://sourcegraph.com/github.com/sourcegraph/sourcegraph/-/blob/enterprise/cmd/frontend/auth/gitlaboauth/login.go#L80:16
• Click on j2d to "NewClientProvider"
• Observe the error page (Git ls-tree pkg/extsvc/gitlab/client.go: file does not exist)

I suspect that internal caches were holding stale data and not getting invalidated upon upload.