Fix support of pre-release dependencies

Author: t20100

src/pip/_internal/build_env.py

@@ -179,7 +179,7 @@ def check_requirements(
                     installed_req_str = f"{req.name}=={dist.version}"
                 else:
                     installed_req_str = f"{req.name}==={dist.version}"
-                if dist.version not in req.specifier:
+                if not req.specifier.contains(dist.version, prereleases=True):
                     conflicting.add((installed_req_str, req_str))
                 # FIXME: Consider direct URL?
         return conflicting, missing