Update MUI and take some care of Storybook

[dominik-zeglen]

I want to merge this change because it adds new inputs and improves storybook a bit.

Screenshots

Pull Request Checklist

1. Privileged views and APIs are guarded by proper permission checks.
2. All visible strings are translated with proper context.
3. All data-formatting is locale-aware (dates, numbers, and so on).
4. Database queries are optimized and the number of queries is constant.
5. Database migration files are up to date.
6. The changes are tested.
7. The code is documented (docstrings, project documentation).
8. GraphQL schema and type definitions are up to date.
9. Changes are mentioned in the changelog.

[piotrgrundas]

Feature branche please!

[codecov]

Codecov Report

Merging #4115 into master will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4115      +/-   ##
==========================================
+ Coverage   91.51%   91.52%   +0.01%     
==========================================
  Files         277      277              
  Lines       15083    15083              
  Branches     1479     1479              
==========================================
+ Hits        13803    13805       +2     
+ Misses        875      874       -1     
+ Partials      405      404       -1

Impacted Files	Coverage Δ
saleor/payment/utils.py	91.5% <0%> (+0.94%)	⬆️

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[dominik-zeglen]

Oh cmon it's mostly snapshots!

[piotrgrundas]

It doesn't really mater what it is. U know that equally I can just approve it because of amount of changes....

[dominik-zeglen]

There's like 500 LOC that really do need to be read. The rest are snapshots and one-line changes like
variant="headline" -> variant="h5".

[patrys]

We should not be using Checkbox component's onClick property before and I don't think we should be using it now. Please at least implement an onChange property so we can gradually fix our code.