Turbopack: codegen EsmAssetReference without turbo tasks (#76024)
Run `EsmAssetReference::code_generation` without cells/turbo tasks.
```
testing against 0293c96cf32
canary 71d8bfcc1f
14.8gb
529.67s user 81.57s system 883% cpu 1:09.18 total
mischnic/codegen-fewer-tasks 72eba1ead2
14.8gb
533.13s user 82.01s system 874% cpu 1:10.32 total
mischnic/codegen-fewer-tasks don't store twice
14.6gb
529.85s user 82.35s system 875% cpu 1:09.90 total
mischnic/codegen-esm-asset
14.2gb
528.69s user 81.37s system 881% cpu 1:09.17 total
```