Fix front-end small issues

[soupette]

Description of what you did:

This PR fixes some small issues in order to clean up the GitHub repo a bit.

• Fixes Component loses category when switching to advanced settings #7523
• Fixes HomePage always shows 'Create Your First Content-Type' messaging #7503

[HichamELBSI]

LGTM

[codecov]

Codecov Report

Merging #7597 into master will decrease coverage by 0.01%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #7597      +/-   ##
==========================================
- Coverage   26.38%   26.37%   -0.02%     
==========================================
  Files        1131     1131              
  Lines       15442    15449       +7     
  Branches     2439     2441       +2     
==========================================
  Hits         4074     4074              
- Misses       9559     9564       +5     
- Partials     1809     1811       +2     

Flag	Coverage Δ
#front	18.24% <0.00%> (-0.02%)	⬇️
#unit	53.85% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...trapi-admin/admin/src/containers/HomePage/index.js	9.09% <0.00%> (-1.26%)	⬇️
...lder/admin/src/components/CreatableSelect/index.js	0.00% <0.00%> (ø)

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