[XLA:GPU] Move Triton scaled dot device tests to dedicated test file.

Extracts scaled dot tests from fusion_emitter_device_test into scaled_dot_device_test to isolate scaled dot test cases and reduce test compilation overhead.

PiperOrigin-RevId: 987286750

third_party/xla/xla/backends/gpu/codegen/triton/tests/BUILD

@@ -226,6 +226,59 @@ xla_test(
     ],
 )
 
+xla_test(
+    name = "scaled_dot_device_test",
+    srcs = ["scaled_dot_device_test.cc"],
+    backends = [
+        "a100",
+        "h100",
+        "b200",
+        "amdgpu_any",
+    ],
+    shard_count = 20,
+    tags = ["no_mac"],
+    deps = [
+        "//xla:comparison_util",
+        "//xla:error_spec",
+        "//xla:literal",
+        "//xla:literal_util",
+        "//xla:types",
+        "//xla:xla_data_proto_cc",
+        "//xla:xla_proto_cc",
+        "//xla/backends/gpu/codegen/triton:test_utils",
+        "//xla/backends/gpu/codegen/triton:xtile_compiler",
+        "//xla/backends/gpu/codegen/triton:xtile_test_base",
+        "//xla/backends/gpu/tests:gpu_pjrt_codegen_test",
+        "//xla/backends/gpu/transforms:composite_rewriter",
+        "//xla/codegen/xtile:block_level_parameters",
+        "//xla/hlo/ir:hlo",
+        "//xla/hlo/parser:hlo_parser",
+        "//xla/hlo/testlib:filecheck",
+        "//xla/hlo/testlib:verified_hlo_module",
+        "//xla/service/gpu:backend_configs_cc",
+        "//xla/service/gpu:gpu_compiler",
+        "//xla/service/gpu:gpu_device_info_for_tests",
+        "//xla/stream_executor:device_description",
+        "//xla/stream_executor/cuda:cuda_compute_capability",
+        "//xla/tests:hlo_interpreter_reference_mixin",
+        "//xla/tests:test_utils",
+        "//xla/tests:xla_internal_test_main",  # fixdeps: keep
+        "//xla/tsl/platform:statusor",
+        "@com_google_absl//absl/algorithm:container",
+        "@com_google_absl//absl/log",
+        "@com_google_absl//absl/log:check",
+        "@com_google_absl//absl/random:distributions",
+        "@com_google_absl//absl/status",
+        "@com_google_absl//absl/status:status_macros",
+        "@com_google_absl//absl/status:status_matchers",
+        "@com_google_absl//absl/strings",
+        "@com_google_absl//absl/types:span",
+        "@com_google_googletest//:gtest",
+        "@llvm-project//llvm:Support",
+        "@llvm-project//mlir:IR",
+    ],
+)
+
 xla_test(
     name = "fusion_emitter_large_test",
     srcs = ["fusion_emitter_large_test.cc"],