fix(docker): change HIGRESS_REGISTRY to docker.io, api-server image not found on 1panel mirror

pack/Dockerfile

@@ -22,7 +22,7 @@
 # - HIGRESS_APISERVER_VERSION: Version of Higress API server to use.
 ARG PYTHON_VERSION=3.12
 ARG REGISTRY_MIRROR=docker.1panel.live
-ARG HIGRESS_REGISTRY=docker.1panel.live
+ARG HIGRESS_REGISTRY=docker.io
 ARG GPUSTACK_BASE_IMAGE=base
 ARG ROCM_REGISTRY=docker.1panel.live
 ARG GPUSTACK_RUNTIME_ROCM_VERSION=7.0.2