Fix reloads of preview

[mlqn]

Description

• replaced reload with resetQueries
• moved refetchLayouts outside of mutations

Related Issue(s)

• #12658
• #12559

Verification

• [x] Your code builds clean without any errors or warnings
• [x] Manual testing done (required)
• [ ] Relevant automated test added (if you find this hard, leave it and we'll help out)

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 98.14815% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 90.37%. Comparing base (b477008) to head (12e4bc8). Report is 20 commits behind head on main.

Files	Patch %	Lines
frontend/packages/ux-editor/src/AppContext.tsx	90.00%	1 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #12733      +/-   ##
==========================================
+ Coverage   90.26%   90.37%   +0.11%     
==========================================
  Files        1320     1320              
  Lines       18953    18957       +4     
  Branches     2313     2312       -1     
==========================================
+ Hits        17107    17133      +26     
+ Misses       1582     1562      -20     
+ Partials      264      262       -2     

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