support None type in pyflyte run command

[0yukali0]

Tracking issue

flyteorg/flyte#6717

Why are the changes needed?

pyflyte command supports strong typing in pipeline and allow users to set the parameters by --var. Supported None type make users set the None type or other values in their willing.

What changes were proposed in this pull request?

pyflyte run command parse None string to None type if type of parameter is Optional type. pyflyte run --remote command parse None string to None type whether type of parameter is Optional type.

How was this patch tested?

# pyflyte run main.py hello --name None
# pyflyte run --remote main.py hello --name None

import flytekit as fl
from typing import Optional

@fl.task()
def hello(name: Optional[int] = None):
    print(name)

Setup process

1. flytectl demo start
2. uv venv -p 3.12
3. uv pip install flytekit
4. pyflyte run main.py hello --name None
5. pyflyte run --remote main.py hello --name None

Screenshots

1. Local mode

2. Remote mode

3. UI

Check all the applicable boxes

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

Related PRs

Docs link

Summary by Bito

• This pull request introduces support for the None type in parameter handling within the pyflyte command, allowing users to specify None as a valid input for optional parameters.
• The changes ensure consistent behavior across both local and remote execution scenarios.
• This update is crucial for users who need to pass None values explicitly in their workflows.
• Overall summary: introduces support for None type in parameter handling, affecting local and remote execution.

[flyte-bot]

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[codecov[bot]]

Codecov Report

:x: Patch coverage is 0% with 5 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 46.47%. Comparing base (3aebd23) to head (1452391).

Files with missing lines	Patch %	Lines
flytekit/interaction/click_types.py	0.00%	5 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3348      +/-   ##
==========================================
- Coverage   47.70%   46.47%   -1.23%     
==========================================
  Files         216      216              
  Lines       22692    22626      -66     
  Branches     2972     2972              
==========================================
- Hits        10825    10516     -309     
- Misses      11289    11588     +299     
+ Partials      578      522      -56     

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