Include HF_HUB_DISABLE_XET in the environment dump (#3290)

* print xet disable var env in env info

* alphabetical order

Author: hanouticelina

src/huggingface_hub/utils/_runtime.py

@@ -385,6 +385,7 @@ def dump_environment_info() -> Dict[str, Any]:
     info["HF_HUB_DISABLE_SYMLINKS_WARNING"] = constants.HF_HUB_DISABLE_SYMLINKS_WARNING
     info["HF_HUB_DISABLE_EXPERIMENTAL_WARNING"] = constants.HF_HUB_DISABLE_EXPERIMENTAL_WARNING
     info["HF_HUB_DISABLE_IMPLICIT_TOKEN"] = constants.HF_HUB_DISABLE_IMPLICIT_TOKEN
+    info["HF_HUB_DISABLE_XET"] = constants.HF_HUB_DISABLE_XET
     info["HF_HUB_ENABLE_HF_TRANSFER"] = constants.HF_HUB_ENABLE_HF_TRANSFER
     info["HF_HUB_ETAG_TIMEOUT"] = constants.HF_HUB_ETAG_TIMEOUT
     info["HF_HUB_DOWNLOAD_TIMEOUT"] = constants.HF_HUB_DOWNLOAD_TIMEOUT