http get() call creates malformed dest path

See original discussion here and a linked bug here

Issue

Creating an http file system and using an rpath with query params results in a malformed destination path.

Steps to Reproduce

Using the test below, update lpath to a path you can write to.

def test_http_output():
    kwargs = {}
    fs = fsspec.implementations.http.HTTPFileSystem(fsspec.filesystem("https", **kwargs))
    expected_output_path = "/var/myloc/outputfile.txt"
    rpath = "https://httpbin.org/gzip?test=value"
    lpath = expected_output_path
   fs.get(rpath, lpath)

This behavior only happens (in my testing) when the rpath uses query params. That triggers exists to be set to True because has_magic returns True.

It also requires lpath and rpath to be strings rather than lists.

Expected Results

A file is written to /var/myloc/outputfile.txt

Actual Results

A file is written to /var/myloc/outputfile.txt/gzip\?test=value

Notes

It's also possible to test the underlying path construction using testutils.py test_other_paths and adding the following parameterized test: (["/path1"], "/path2/path3.txt", True, ["/path2/path3.txt"])

Start with HTTPFileSystem.get and the path-construction logic exercised by the reproduction, then inspect testutils.py and its test_other_paths cases. Reproduce the query-parameter case with string paths and add or update the parameterized test; done means the destination is /var/myloc/outputfile.txt rather than a path containing the remote filename and query string.