BF: Update component experiment refs on paste

[TEParsons]

Otherwise, copying from one experiment to another causes an error on compile as the component still points to its original experiment

[peircej]

Task linked: CU-2hrnq67 Copying and pasteing a routine from one experiment to another then prevents a sync to pavlovia

[codecov]

Codecov Report

Merging #4740 (7e666c5) into release (4b7814b) will decrease coverage by 0.00%.
The diff coverage is 0.00%.

@@             Coverage Diff             @@
##           release    #4740      +/-   ##
===========================================
- Coverage    45.34%   45.34%   -0.01%     
===========================================
  Files          294      294              
  Lines        58844    58846       +2     
  Branches     10393    10393              
===========================================
  Hits         26682    26682              
- Misses       29778    29780       +2     
  Partials      2384     2384              

Impacted Files	Coverage Δ
psychopy/app/builder/builder.py	48.57% <0.00%> (-0.05%)	⬇️

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