Previous 6caa4a17ac ("fix: display correct help in the idf_size.py wrapper")
introduced a regression, because it uses exit_on_error parameter for
argparse.ArgumentParser, which was added in python3.9, making
idf_size.py incompatible with idf.py minimal required python3.8.
The objective is to inspect the arguments of idf_size.py using a wrapper
argparse to determine whether the legacy or refactored version should be
initiated, while always displaying help for the underlying version. The
exit_on_error function was previously utilized to prevent argparse from
exiting and displaying help/usage. This replaces exit_on_error with a
workaround that makes the --format argument optional. Since this is the
sole instance where the wrapper argparse might fail, it achieves the
same outcome as using exit_on_error.
Fixes: 6caa4a17ac ("fix: display correct help in the idf_size.py wrapper")
Signed-off-by: Frantisek Hrbata <frantisek.hrbata@espressif.com>
ebc9d02146