update `ModuleFormat` to understand latest `rescript.json` module con… #2869

Job	Run time
build (macos-13)	16m 26s
build-linux (ubuntu-latest)	48s
build (macos-14)	6m 24s
build-linux (buildjet-2vcpu-ubuntu-2204-arm)	1m 7s
build (windows-latest)	14m 18s
package	1m 4s
	40m 7s

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