set Storybook default viewmode to "Docs"

[txwkx]

Description

Set the Docs tab as a default view mode for stories in Storybook.

📝 Additional Information

⚠️ You might notice that the initial render of the Storybook has the Canvas tab open and only after clicking on a different story it would start defaulting to Docs. I've checked with my other Storybook projects that use this addon - same behaviour.

Suboptimal, but quite minor tbf

[etr2460]

lgtm. a bit disappointing this doesn't work in chromatic, but it's strictly an improvement, so lets merge

[etr2460]

@allcontributors please add @txwkx for code

[allcontributors]

@etr2460

I've put up a pull request to add @txwkx! 🎉