[Bug][python] Incorrect processing of keyword parameters interrupts the data flow.

[scanleale]

Describe the bug
When I test a python function with a keyword argument, there is a break in the data flow

To Reproduce
py code like:

from typing import Optional
def func1(path: str):
    dataset_module = '123'
    dataset_name = path
    #get_dataset_builder_class(dataset_module, dataset_name)
    get_dataset_builder_class(dataset_module, dataset_name=dataset_name)
def get_dataset_builder_class(
    dataset_module: Optional[str], dataset_name: Optional[str] = None
):
    print(dataset_module)
    print(dataset_name)
    
func1("yooho")

def source = cpg.literal(".*yooho.*")
def sink = cpg.call("print")
sink.reachableByFlows(source).p

Expected behavior
While I use comment code which Non-Keyword Arguments get_dataset_builder_class(dataset_module, dataset_name), it looks like right.

Screenshots
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Desktop (please complete the following information):

• WINDOWS11
• Version: 4.0.34
• openjdk 19

Additional context
Add any other context about the problem here.