[sda-cli] The -bytes option doesn't display file sizes in bytes

[nanjiangshu]

Describe the bug
When listing the files with the -bytes option enabled, it still prints the file sizes in a human-readable format, instead of in bytes as expected.

Steps to reproduce
Run the command

./sda-cli  list  -config s3cmd.conf  -bytes

and verify that the file sizes are still printed in a human-readable format.

Expected behavior

• When the -bytes option is enabled, file sizes should be printed in bytes; otherwise, they should be shown in human-readable format.
• Tests verifying the fix are added

Additional context

Estimation of size: small

Estimation of priority: high