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perf(prerender): reuse each page's HTML render for its navigation data #489

Job	Run time
build-api-container	23s
schema-compat	4m 40s
postgres-concurrency	1m 5s
test (platform-unit)	1m 19s
lint-build-check	1m 3s
test (platform-api-integration)	3m 1s
	11m 31s