[backport v2.8.9] Typescript generation script fails to run when publishing shell version

[github-actions]

This is a backport issue for #12147, automatically created via GitHub Actions workflow initiated by @aalves08

Original issue body:

Describe the bug

When attempting to build an extension using the latest rc version of the @rancher/shell library (example for release-2.8 version 1.2.5-rc.1 ) the build will fail with this error:

 error  in /home/runner/work/2.8-extension/2.8-extension/node_modules/@rancher/shell/initialize/layouts.ts

ERROR in /home/runner/work/2.8-extension/2.8-extension/node_modules/@rancher/shell/initialize/layouts.ts(1,35):
1:35 Could not find a declaration file for module '@shell/utils/nuxt'. '/home/runner/work/2.8-extension/2.8-extension/node_modules/@rancher/shell/utils/nuxt.js' implicitly has an 'any' type.
  Try `npm i --save-dev @types/rancher__shell` if it exists or add a new declaration (.d.ts) file containing `declare module '@shell/utils/nuxt';`
  > 1 | import { sanitizeComponent } from '@shell/utils/nuxt';
      |                                   ^
    2 | import blank from '@shell/layouts/blank.vue';
    3 | import defaultLayout from '@shell/layouts/default.vue';
    4 | import home from '@shell/layouts/home.vue';

Example build action.

To Reproduce

• Create an extension with the legacy-v1-pre-release tag or pin the @rancher/version to 1.2.5.-rc.1
• Run yarn build-pkg <extension-pkg-name>

Result

Extension fails to build due to a type issue

Additional context

Update: This happens for each version of @rancher/shell, it appears that the node_modules/.bin directory no longer exists

This appears to be caused by the typegen.sh script not finding the tsc binary during the publish action:

https://github.com/rancher/dashboard/actions/runs/11128727581/job/30924140033#step:8:15

[aalves08]

@jordojordo I think we can close this one, right?

[jordojordo]

@aalves08 Yes, there was some follow-on work that has also been backported: #12228

[aalves08]

Closing as per comment above