chore: further enhanced repack-juggler script (#7188)
chore: further enhanced repack-juggler script (#7188)

With this change, the script is now 2-stage:
- first, prepare browser build with `repack-juggler.js --prepare`
- afterwards, run the script to repack tot juggler version with the
  bubild
microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright