HAR request bodies for application/x-www-form-urlencoded may be encoded
as postData.params (array of {name, value}) with no postData.text field
(e.g. Chrome DevTools export). _body_bytes read only text, so those
bodies were silently dropped and the generated client method lost its
request fields. Fall back to url-encoding params when text is absent,
matching the HAR spec.
Fixes#8
Co-authored-by: thejesh23 <thejesh23@users.noreply.github.com>
