Fix union transformer

[pingsutw]

Why are the changes needed?

Failed to convert a literal to python valueunion[dataclass, dataclass].

from dataclasses import dataclass
from typing import Union

from mashumaro.mixins.json import DataClassJSONMixin

from flytekitplugins.flyin import vscode
from flytekit import task


@dataclass
class Cat(DataClassJSONMixin):
    name: str
    age: int


@dataclass
class Yarn(DataClassJSONMixin):
    color: str
    length: int

@task
def t1(num: int) -> Union[Cat, Yarn]:
    return Cat(name="Mittens", age=num)


if __name__ == '__main__':
    print(t1(num=1))

What changes were proposed in this pull request?

When converting literal to python value, union transformer should catch any kind of exception.

flytekit/flytekit/core/type_engine.py

Lines 1513 to 1514 in 5c6802c

	except (TypeTransformerFailedError, AttributeError) as e:
	logger.debug(f"Failed to convert from {lv} to {v}", e)

. Therefore, if one of transformers in the union fails, it will try next one.

How was this patch tested?

Run above workflow locally

Setup process

Screenshots

Check all the applicable boxes

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

[codecov]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (5c6802c) 86.22% compared to head (ba8205f) 86.21%.

Files	Patch %	Lines
flytekit/core/type_engine.py	83.33%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2024      +/-   ##
==========================================
- Coverage   86.22%   86.21%   -0.01%     
==========================================
  Files         320      320              
  Lines       23531    23540       +9     
  Branches     3464     3466       +2     
==========================================
+ Hits        20289    20296       +7     
- Misses       2650     2652       +2     
  Partials      592      592              

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[eapolinario]

can you remove the comment?