address bot comments

esphome/yaml_util.py

@@ -755,6 +755,11 @@ class ESPHomeDumper(yaml.SafeDumper):
         return self.represent_scalar(tag="!remove", value=value.value)
 
     def represent_include_file(self, value):
+        if value.vars:
+            mapping = {"file": value.file.as_posix(), "vars": value.vars}
+            return self.represent_mapping(
+                tag="!include", mapping=mapping, flow_style=False
+            )
         return self.represent_scalar(tag="!include", value=value.file.as_posix())
 
     def represent_id(self, value):

tests/unit_tests/test_yaml_util.py

@@ -516,6 +516,20 @@ def test_represent_include_file() -> None:
     assert yaml_util.dump({"key": include}) == "key: !include 'path/to/file.yaml'\n"
 
 
+def test_represent_include_file_with_vars() -> None:
+    """Test that IncludeFile with vars is dumped as !include mapping form."""
+    include = yaml_util.IncludeFile(
+        Path("/fake/main.yaml"),
+        "path/to/file.yaml",
+        {"key": "value"},
+        lambda _: {},
+    )
+    result = yaml_util.dump({"key": include})
+    assert "!include" in result
+    assert "file: path/to/file.yaml" in result
+    assert "key: value" in result
+
+
 def test_represent_include_file_with_data_base_mixin() -> None:
     """Test that IncludeFile wrapped with ESPHomeDataBase mixin is also dumped correctly.