fix: mark width and height as required

[aeneasr]

Closes ory/sdk#157

Related issue(s)

Checklist

• I have read the contributing guidelines.
• I have referenced an issue containing the design document if my change
  introduces a new feature.
• I am following the
  contributing code guidelines.
• I have read the security policy.
• I confirm that this pull request does not address a security
  vulnerability. If this pull request addresses a security. vulnerability, I
  confirm that I got green light (please contact
  [email protected]) from the maintainers to push
  the changes.
• I have added tests that prove my fix is effective or that my feature
  works.
• I have added or changed the documentation.

Further Comments

[codecov]

Codecov Report

Merging #2322 (fad9ab4) into master (2fa33e4) will decrease coverage by 0.35%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2322      +/-   ##
==========================================
- Coverage   76.92%   76.56%   -0.36%     
==========================================
  Files         318      318              
  Lines       17622    17150     -472     
==========================================
- Hits        13555    13131     -424     
+ Misses       3128     3087      -41     
+ Partials      939      932       -7     

Impacted Files	Coverage Δ
ui/node/attributes.go	60.86% <ø> (ø)
x/provider.go	0.00% <0.00%> (-44.45%)	⬇️
selfservice/hook/session_destroyer.go	60.00% <0.00%> (-13.34%)	⬇️
selfservice/flow/login/hook.go	89.01% <0.00%> (-5.81%)	⬇️
selfservice/strategy/oidc/strategy_login.go	67.60% <0.00%> (-5.60%)	⬇️
schema/errors.go	79.56% <0.00%> (-2.59%)	⬇️
ui/container/container.go	88.69% <0.00%> (-2.27%)	⬇️
selfservice/flow/registration/hook.go	84.15% <0.00%> (-2.05%)	⬇️
selfservice/flow/login/handler.go	80.48% <0.00%> (-1.79%)	⬇️
selfservice/flow/settings/hook.go	72.80% <0.00%> (-1.23%)	⬇️
... and 12 more

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