Some feature names used in tests had minor differences compared to
the well-known ones from `curl -V`. This patch syncs them to make test
results easier to grok.
Closes#14183
Reproduces #9735 and verifies the subsequent fix. The original issue
uses a pipe that cannot be rewound, but this test case instead sets a
callback without rewind ability to get roughly the same properties but
being a much more portable test.