Move HTTP status handling out of handlers#2499

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rfontanarosa/1920/code-health-emit-ok-http-status-in-callbacks-instead-of-onhttpsrequestasync-1google/ground-platform:rfontanarosa/1920/code-health-emit-ok-http-status-in-callbacks-instead-of-onhttpsrequestasync-1Copy head branch name to clipboard