connot build Bazel 6.4.0 on loongarch64

### Description of the bug:

[root@bogon bazel]# export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-11.0.17.0.8-11.3.0.a.ky10.loongarch64/
[root@bogon bazel]# env EXTRA_BAZEL_ARGS="--tool_java_runtime_version=local_jdk" bash ./compile.sh
🍃 Building Bazel from scratch......
🍃 Building Bazel with Bazel.
DEBUG: /tmp/bazel_BXZrrnTt/out/external/build_bazel_rules_nodejs/index.bzl:122:10: WARNING: check_rules_nodejs_version h as been removed. This is a no-op, please remove the call.
ERROR: /tmp/bazel_BXZrrnTt/out/external/local_config_cc/BUILD:47:19: in cc_toolchain_suite rule @local_config_cc//:toolc hain: cc_toolchain_suite '@local_config_cc//:toolchain' does not contain a toolchain for cpu 'unknown'
ERROR: /tmp/bazel_BXZrrnTt/out/external/local_config_cc/BUILD:47:19: Analysis of target '@local_config_cc//:toolchain' f ailed
INFO: Repository zstd-jni instantiated at:
/home/sunway-cloud-dam-py/bazel/WORKSPACE:287:18: in
/home/sunway-cloud-dam-py/bazel/distdir.bzl:94:17: in dist_http_archive
Repository rule http_archive defined at:
/home/sunway-cloud-dam-py/bazel/tools/build_defs/repo/http.bzl:372:31: in
ERROR: Analysis of target '//src:bazel_nojdk' failed; build aborted:
INFO: Elapsed time: 8.205s
INFO: 0 processes.
FAILED: Build did NOT complete successfully (253 packages loaded, 2095 targets\
configured)
currently loading: @com_google_protobuf//java/util
Fetching repository @blake3; starting
Fetching /tmp/bazel_BXZrrnTt/out/external/blake3; Extracting 1.3.3.zip

ERROR: Could not build Bazel

### Which category does this issue belong to?

Core

### What's the simplest, easiest way to reproduce this bug? Please provide a minimal example if possible.

_No response_

### Which operating system are you running Bazel on?

loongarch64 linux

### What is the output of `bazel info release`?

_No response_

### If `bazel info release` returns `development version` or `(@non-git)`, tell us how you built Bazel.

_No response_

### What's the output of `git remote get-url origin; git rev-parse master; git rev-parse HEAD` ?

_No response_

### Is this a regression? If yes, please try to identify the Bazel commit where the bug was introduced.

_No response_

### Have you found anything relevant by searching the web?

_No response_

### Any other information, logs, or outputs that you want to share?

_No response_

Start with compile.sh and the reported local_config_cc toolchain error when building on loongarch64 Linux with Java 11. Inspect WORKSPACE and tools/build_defs/repo/http.bzl, then reproduce the failure with the provided EXTRA_BAZEL_ARGS setting. Done means Bazel 6.4.0 builds successfully on loongarch64.

Written by the indexing model from the issue text.