perf(native): skip backfill on clean incrementals #3639

Job	Run time
Security audit	6m 52s
Lint	6m 31s
Rust compile check	59s
Verify dynamic imports	7s
Native host build (ubuntu-latest)	3m 17s
Native host build (windows-latest)	5m 24s
TypeScript type check	7m 3s
Native host build (macos-latest)	2m 20s
Test Node 22 (ubuntu-latest)	7m 55s
Engine parity (ubuntu-latest)	6m 30s
Engine parity (windows-latest)	12m 16s
Test Node 22 (macos-latest)	12m 6s
Engine parity (macos-latest)	9m 33s
Test Node 22 (windows-latest)	14m 5s
CI Testing Pipeline	2s
	1h 35m 0s

Provide feedback