Fix transition/dialog/outlet bug & e2e tests

[DavidVollmers]

This PR introduces e2e tests running against https://e2e.ignis.dvolper.dev to test full functionality of opening/closing a Dialog within a Transition rendered from a DialogOutlet.

This PR also fixes a bug with the above described issue.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.14% 🎉

Comparison is base (28eb66d) 38.21% compared to head (40e0d95) 38.35%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #27      +/-   ##
==========================================
+ Coverage   38.21%   38.35%   +0.14%     
==========================================
  Files          75       75              
  Lines        2570     2576       +6     
==========================================
+ Hits          982      988       +6     
  Misses       1588     1588              

Files Changed	Coverage Δ
packages/Ignis.Components/ContentRegistry.cs	100.00% <100.00%> (ø)
packages/Ignis.Components/IgnisComponentBase.cs	88.37% <100.00%> (+0.27%)	⬆️
...is.Components/IgnisContentProviderComponentBase.cs	93.10% <100.00%> (ø)
...Tailwind/Ignis.Components.HeadlessUI/Transition.cs	91.12% <100.00%> (+0.21%)	⬆️

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