fix: remove call to `forceReRender()` on STORY_CHANGED in addon knobs
fix: remove call to `forceReRender()` on STORY_CHANGED in addon knobs

This call is no necessary because it's already done by SB core.

Closes https://github.com/storybooks/storybook/issues/5382.

storybooks/react-storybook,kadirahq/react-storybook,storybooks/storybook,storybooks/storybook,storybooks/storybook,storybooks/react-storybook,storybooks/react-storybook,storybooks/storybook,kadirahq/react-storybook,storybooks/storybook,storybooks/storybook,storybooks/storybook,storybooks/react-storybook