Rename a test

PiperOrigin-RevId: 515628124

rust/test/BUILD

@@ -2,17 +2,17 @@ load("//rust:defs.bzl", "rust_proto_library")
 load("@rules_rust//rust:defs.bzl", "rust_test")
 
 rust_proto_library(
-    name = "hello_world_rs_proto",
+    name = "unittest_rs_proto",
     testonly = True,
     deps = ["//third_party/protobuf:unittest_proto"],
 )
 
 rust_test(
-    name = "hello_world_test",
-    srcs = ["hello_world_test.rs"],
+    name = "unittest_proto_test",
+    srcs = ["unittest_proto_test.rs"],
     # TODO(b/270274576): Enable testing on arm once we have a Rust Arm toolchain.
     tags = ["not_build:arm"],
-    deps = [":hello_world_rs_proto"],
+    deps = [":unittest_rs_proto"],
 )
 
 proto_library(