docs: keep shared task examples in navigation

Signed-off-by: Hongsheng Liu <liuhongsheng4@huawei.com>

tests/docs/test_generate_examples.py

@@ -47,6 +47,14 @@ def test_model_display_names_require_string_mapping(tmp_path, monkeypatch):
         generate_examples.load_model_display_names()
 
 
+def test_only_general_serving_examples_get_generated_pages():
+    general_example = SimpleNamespace(category="offline_inference", path=Path("text_to_image"))
+    model_example = SimpleNamespace(category="offline_inference", path=Path("qwen3_omni"))
+
+    assert generate_examples.is_general_example(general_example)
+    assert not generate_examples.is_general_example(model_example)
+
+
 def test_quantization_examples_keep_source_urls_under_feature_navigation(tmp_path, monkeypatch):
     nav_file = tmp_path / "docs" / ".nav.yml"
     nav_file.parent.mkdir(parents=True)