[inductor] fix open temp file failed on Windows. (#159342)

Fix open temp file failed on Windows. Error message:
<img width="1181" height="239" alt="image" src="https://github.com/user-attachments/assets/e4a6f438-cb06-44c6-959b-0a6a49d2f44f" />

Here two option to fix this issue: https://stackoverflow.com/questions/66744497/python-tempfile-namedtemporaryfile-cant-use-generated-tempfile
1. `tempfile.NamedTemporaryFile` must setup `delete=False` on Windows
2. Use `WritableTempFile` to handle this case on Windows.

Pull Request resolved: https://github.com/pytorch/pytorch/pull/159342
Approved by: https://github.com/jansel

torch/_inductor/codecache.py

@@ -1621,6 +1621,36 @@ class CudaKernelParamCache:
         return cls.cache.keys()
 
 
+class WritableTempFile:
+    """
+    Avoid "Permission denied error" on Windows:
+      with tempfile.NamedTemporaryFile("w", suffix=".gv") as temp_file:
+        # Not writable on Windows:
+        # https://docs.python.org/3/library/tempfile.html#tempfile.NamedTemporaryFile
+
+    Example:
+        with WritableTempFile("w", suffix=".gv") as temp_file:
+            tree.to_dotfile(temp_file.name)
+    """
+
+    def __init__(
+        self, mode: str = "w", *, encoding: Any = None, suffix: Any = None
+    ) -> None:
+        self.mode = mode
+        self.encoding = encoding
+        self.suffix = suffix
+
+    def __enter__(self) -> Any:
+        self.temp_file = tempfile.NamedTemporaryFile(
+            self.mode, encoding=self.encoding, suffix=self.suffix, delete=False
+        )
+        return self.temp_file
+
+    def __exit__(self, exc_type: Any, exc_val: Any, exc_tb: Any) -> None:
+        self.temp_file.close()
+        os.unlink(self.temp_file.name)
+
+
 class AotCodeCompiler:
     """
     Compile AOT Inductor generated code.
@@ -1735,7 +1765,17 @@ class AotCodeCompiler:
                 )
 
         # Log the AOTInductor wrapper and kernel code, if needed.
-        with tempfile.NamedTemporaryFile("w+") as t:
+        with WritableTempFile("w+") as t:
+            """
+            Avoid "Permission denied error" on Windows:
+            with tempfile.NamedTemporaryFile("w", suffix=".gv") as temp_file:
+                # Not writable on Windows:
+                # https://docs.python.org/3/library/tempfile.html#tempfile.NamedTemporaryFile
+
+            Example:
+                with WritableTempFile("w", suffix=".gv") as temp_file:
+                    tree.to_dotfile(temp_file.name)
+            """
             t.writelines((wrapper_code, "\n", kernel_code, "\n"))
             t.flush()
             V.debug.output_code(t.name, extension="cpp")