As we are going to leverage Storybook (SB) for convergence (primarily the Composition feature) we need to migrate to SB v6.

Currently we are at 5.3

Tasks:
in general follow migration guide

• bump @storybook/* deps in whole repo (NOTE: potential merge conflicts with chore: apply single version policy on storybook #16965 )

What apps/packages will be affected:

• apps/vr-tests - contains storybooks that are executed against Screener for visual regressions
  • stories are using deprecated storiesOf API (TBD if we gonna go migrate to CSF ?) - no action needed for now
  • SB config uses "deprecated" API's (chore: apply single version policy on storybook #16965)
  • screener doesn't support SB6 apis (Blocker) (chore: apply single version policy on storybook #16965)
• packages/storybook - our custom package that provides various fluentui related SB extensions
  • there might be some API changes needed as well
• packages/react-examples uses deprecated config apis
  • preview.js uses imperative calls configure(), addDecorator() etc
  • this will need to be manually migrated to main.js.

  • If that might turn out to be too difficult, we can opt out temporarily (no-hoist ?, explicitly defining all SB deps to v 5.3 within scripts/ package). In long run we wanna use 1 version of "critical" tool that we use within monorepo.

• packages/fluentui: no action needed - SB is not being used
• packages/web-components - they are using SB 5.3. We need to opt out explicitly probably via no-hoist as we are not owners of this package and we don't wanna break their stuff (handled by this PR)