[core] Deduplicate entity type boilerplate with X-macro pattern (#15618)

script/ci-custom.py

@@ -672,7 +672,7 @@ def lint_using_esp_idf_deprecated(fname, line, col, content):
     )
 
 
-@lint_content_check(include=["*.h"])
+@lint_content_check(include=["*.h"], exclude=["esphome/core/entity_types.h"])
 def lint_pragma_once(fname, content):
     if "#pragma once" not in content:
         return (

script/helpers.py

@@ -174,7 +174,12 @@ def build_all_include(header_files: list[str] | None = None) -> None:
             if line
         ]
 
-    headers = [f'#include "{h}"' for h in header_files]
+    from esphome.writer import ENTITY_TYPES_H_TARGET
+
+    # X-macro files are included multiple times with different macro definitions
+    # and must not be included bare in the all-include header
+    exclude = {ENTITY_TYPES_H_TARGET}
+    headers = [f'#include "{h}"' for h in header_files if h not in exclude]
     headers.sort()
     headers.append("")
     content = "\n".join(headers)