cmake: only run prettier explicitly

[nektro]

greatly speeds up bun run build

before -- Configuring done (84.8s)
after -- Configuring done (8.7s)

[robobun]

❌ @nektro, your commit 64203b1 has 11 failures in #4093:

test/js/node/watch/fs.watch.test.ts - timeout on 🍎 14 x64

test/js/web/streams/streams.test.js - 1 failing on 🍎 13 x64

test/js/web/streams/streams.test.js - 1 failing on 🍎 14 x64

test/js/third_party/@azure/service-bus/azure-service-bus.test.ts - 1 failing on 🐧 22.04 x64

test/js/third_party/@azure/service-bus/azure-service-bus.test.ts - 1 failing on 🐧 20.04 x64

test/js/third_party/@azure/service-bus/azure-service-bus.test.ts - 1 failing on 🐧 12 x64

test/js/web/fetch/fetch-tcp-stress.test.ts - timeout on 🍎 14 aarch64

test/js/web/fetch/fetch-tcp-stress.test.ts - timeout on 🍎 13 x64

test/js/web/fetch/fetch-tcp-stress.test.ts - timeout on 🍎 14 x64

test/js/third_party/socket.io/socket.io-connection-state-recovery.test.ts - 1 failing on 🐧 20.04 x64-baseline

test/js/node/test/parallel/fs-watch-recursive-add-file-with-url.test.js - 1 failing on 🍎 14 aarch64

test/integration/next-pages/test/dev-server.test.ts - 1 failing on 🍎 14 aarch64

test/js/bun/test/mock/mock-module.test.ts - segmentation fault on 🍎 14 aarch64

test/cli/hot/watch.test.ts - 1 failing on 🪟 x64-baseline

test/cli/hot/watch.test.ts - 1 failing on 🪟 x64

test/cli/watch/watch.test.ts - 2 failing on 🪟 x64

test/cli/watch/watch.test.ts - 2 failing on 🪟 x64-baseline

test/js/bun/http/bun-serve-static.test.ts - annotation error on 🍎 13 aarch64