fix: run package builds during publish []

[Mitch Goudy (mgoudy91)]

Summary

Prevents malformed package releases by ensuring publish-time build scripts run when Lerna publishes tagged packages from CI.

Changes

• override ignore-scripts during the CircleCI package publish step so package lifecycle build scripts can run
• switch publishable packages to prepack so packaging itself produces lib/dist before publish
• cover the packages currently relying on generated publish artifacts: @contentful/ecommerce-app-base, @contentful/dam-app-base, and @contentful/eslint-plugin-contentful-apps

Notes

• This follows the @contentful/ecommerce-app-base@4.1.0 release, which produced a package without lib/ even though the GitHub release/tag existed.
• Verified locally by running NPM_CONFIG_IGNORE_SCRIPTS=false npm pack --dry-run --json in packages/ecommerce-app-base from a clean directory and confirming the tarball contains lib/index.js.

Updated in:

• .circleci/config.yml
• packages/ecommerce-app-base
• packages/dam-app-base
• packages/eslint-plugin-contentful-apps