fix(#5975): Transaction-ify the CreateAction

[ozyx]

Closes #5975

Describe your changes:

Transaction-ifies the CreateAction as composable MutableDomainObjects in the tree were not having their compositions updated properly after creating a new child object.

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Author Checklist

• Changes address original issue?
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Reviewer Checklist

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[codecov]

Codecov Report

Merging #6306 (b569be7) into master (8040b27) will decrease coverage by 0.03%.
The diff coverage is 92.85%.

❗ Current head b569be7 differs from pull request most recent head d205095. Consider uploading reports for the commit d205095 to get more accurate results

@@            Coverage Diff             @@
##           master    #6306      +/-   ##
==========================================
- Coverage   55.03%   55.00%   -0.03%     
==========================================
  Files         607      607              
  Lines       26245    26254       +9     
  Branches     2395     2395              
==========================================
- Hits        14444    14442       -2     
- Misses      11137    11147      +10     
- Partials      664      665       +1     

Flag	Coverage Δ		*Carryforward flag
e2e-ci	39.46% <100.00%> (+0.01%)	⬆️	Carriedforward from 838f8e0
e2e-full	51.19% <100.00%> (+<0.01%)	⬆️	Carriedforward from 838f8e0
e2e-stable	54.31% <69.23%> (-0.04%)	⬇️
unit	49.62% <69.23%> (+<0.01%)	⬆️

*This pull request uses carry forward flags. Click here to find out more.

Impacted Files	Coverage Δ
src/plugins/formActions/CreateAction.js	94.62% <92.85%> (-3.00%)	⬇️
src/utils/staleness.js	66.66% <0.00%> (-28.58%)	⬇️
src/ui/mixins/staleness-mixin.js	66.66% <0.00%> (-22.23%)	⬇️
src/plugins/plot/draw/DrawWebGL.js	90.09% <0.00%> (-1.99%)	⬇️
example/generator/SinewaveStalenessProvider.js	86.27% <0.00%> (-1.97%)	⬇️
src/api/time/IndependentTimeContext.js	85.56% <0.00%> (-0.90%)	⬇️
src/plugins/gauge/components/Gauge.vue	62.04% <0.00%> (-0.61%)	⬇️
src/api/telemetry/TelemetryAPI.js	86.15% <0.00%> (-0.39%)	⬇️
src/ui/components/tags/TagSelection.vue	0.00% <0.00%> (ø)
... and 4 more

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[unlikelyzero]

e2e changes look good to me!

[jvigliotta]

LGTM! Nice work!