Serialize identifiers to ESTree #7247

Job	Run time
Cargo Deny	13s
Spell Check	5s
Format	12s
Check and Build (windows-latest)	1m 50s
Check Unused Dependencies	3s
Check and Build (ubuntu-latest)	51s
Check and Build (macos-14)	1m 9s
Conformance	3m 7s
Check Wasm	1m 16s
Doc	1m 33s
Clippy	1m 0s
Test (windows-latest)	3m 4s
Test (ubuntu-latest)	1m 24s
Test (macos-14)	1m 2s
	16m 49s

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