[wip] Fix Union Type Dataclass Ambiguous Error

[Future-Outlier]

Tracking issue

#5489

Why are the changes needed?

What changes were proposed in this pull request?

How was this patch tested?

Setup process

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Check all the applicable boxes

• I updated the documentation accordingly.
• All new and existing tests passed.
• All commits are signed-off.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 24.29%. Comparing base (1124ea9) to head (6abef55).
Report is 221 commits behind head on master.

❗ There is a different number of reports uploaded between BASE (1124ea9) and HEAD (6abef55). Click for more details.

HEAD has 3 uploads less than BASE

Flag	BASE (1124ea9)	HEAD (6abef55)
unittests-flyteadmin	1	0
unittests-flytectl	1	0
unittests-flytepropeller	1	0

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #5627       +/-   ##
===========================================
- Coverage   36.17%   24.29%   -11.89%     
===========================================
  Files        1302      529      -773     
  Lines      109417    58426    -50991     
===========================================
- Hits        39587    14196    -25391     
+ Misses      65694    42852    -22842     
+ Partials     4136     1378     -2758     

Flag	Coverage Δ
unittests-datacatalog	51.37% <ø> (ø)
unittests-flyteadmin	?
unittests-flytecopilot	12.17% <ø> (ø)
unittests-flytectl	?
unittests-flyteidl	7.09% <ø> (ø)
unittests-flyteplugins	53.31% <ø> (ø)
unittests-flytepropeller	?
unittests-flytestdlib	55.33% <ø> (-0.03%)	⬇️

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