add fp8 block example test (#1697)

SUMMARY:
[INFERENG-1291](https://issues.redhat.com/browse/INFERENG-1291) makes a
simple request to include the
tests/examples/test_quantization_w8a8_fp8.py script in our existing
examples test cases.

TEST PLAN:
Verified by running the Custom Test Run workflow requesting the
"examples" tests. the [new test
passes](https://github.com/neuralmagic/llm-compressor-testing/actions/runs/16653093155/job/47147130847#step:12:92):


tests/examples/test_quantization_w8a8_fp8.py::TestQuantizationW8A8_FP8::test_example_scripts[gemma2_example.py]
PASSED [ 50%]

tests/examples/test_quantization_w8a8_fp8.py::TestQuantizationW8A8_FP8::test_example_scripts[fp8_block_example.py]
PASSED [ 57%]

Signed-off-by: Derek Kozikowski <106621615+derekk-nm@users.noreply.github.com>

Author: derekk-nm

tests/examples/test_quantization_w8a8_fp8.py

@@ -39,11 +39,16 @@ def test_doc_example_command(self, example_dir: str, tmp_path: Path):
 
         assert result.returncode == 0, gen_cmd_fail_message(command, result)
 
-    def test_gemma2_example_script(self, example_dir: str, tmp_path: Path):
+    @pytest.mark.parametrize(
+        "script_file",
+        [
+            "gemma2_example.py",
+            "fp8_block_example.py",
+        ],
+    )
+    def test_example_scripts(self, example_dir: str, tmp_path: Path, script_file: str):
         """
-        Test for the "gemma2_example.py" script in the folder.
+        Test for example scripts in the folder.
         """
-        script_filename = "gemma2_example.py"
-        command, result = copy_and_run_script(tmp_path, example_dir, script_filename)
-
+        command, result = copy_and_run_script(tmp_path, example_dir, script_file)
         assert result.returncode == 0, gen_cmd_fail_message(command, result)