Migrate generate function to SyntaxEditor #40565

Job	Run time
rustfmt	12s
analysis-stats	4m 33s
clippy	1m 12s
changes	6s
proc-macro-srv	1m 59s
miri	46s
Rust (windows-latest)	4m 32s
Rust (macos-latest)	4m 32s
Typo Check	5s
Rust (ubuntu-latest)	4m 34s
Rust Cross (x86_64-unknown-linux-musl)	1m 23s
Rust Cross (wasm32-unknown-unknown)	51s
Rust Cross (powerpc-unknown-linux-gnu)	1m 18s
TypeScript	0s
cancel-if-matrix-failed	2s
conclusion	1s
	26m 6s

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