fix: support pack hooks (prepack, postpack)

[continuous-releases-staging[bot]]

Run & review this pull request in StackBlitz Codeflow.

commit: da7e676

playground-a

``` npm i https://d98c131a.stackblitz-cr.pages.dev/stackblitz-labs/pkg.pr.new/playground-a@111 ```

playground-b

``` npm i https://d98c131a.stackblitz-cr.pages.dev/stackblitz-labs/pkg.pr.new/playground-b@111 ```

pkg-pr-new

``` npm i https://d98c131a.stackblitz-cr.pages.dev/stackblitz-labs/pkg.pr.new/pkg-pr-new@111 ```

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Templates

- [example-1](https://d98c131a.stackblitz-cr.pages.dev/template/5531bb5e-a0cf-45fe-984a-424121792a53)