[core] [9/N] Skip installation if already (ray-project#48731)

Signed-off-by: dentiny <dentinyhao@gmail.com>
Signed-off-by: hjiang <dentinyhao@gmail.com>

python/ray/_private/runtime_env/uv.py

@@ -96,7 +96,6 @@ def _get_uv_exec_to_install() -> str:
             "install",
             "--disable-pip-version-check",
             "--no-cache-dir",
-            "--force-reinstall",
             _get_uv_exec_to_install(),
         ]
         logger.info("Installing package uv to %s", virtualenv_path)
@@ -154,11 +153,6 @@ async def _install_uv_packages(
         uv_exists = await self._check_uv_existence(python, cwd, pip_env, logger)
 
         # Install uv, which acts as the default package manager.
-        #
-        # TODO(hjiang): If `uv` in virtual env perfectly matches the version users
-        # require, we don't need to install also. It requires a different
-        # implementation to execute and check existence. Here we take the simpliest
-        # implementation, always reinstall the required version.
         if (not uv_exists) or (self._uv_config.get("uv_version", None) is not None):
             await self._install_uv(path, cwd, pip_env, logger)