Fix: PyDocs: Annotations for callables with variable number of arguments

Annotation `Callable[[Any, ...], str | None]` is not supported by Python
typing system and ... will be misinterpreted as unknown type instead of
option to provide variable number of arguments.

Ref !138804

source/blender/python/intern/bpy_rna_operator.cc

@@ -93,7 +93,10 @@ PyDoc_STRVAR(
     "additional user defined positional arguments are passed to the message function.\n"
     "\n"
     "   :arg message: The message or a function that returns the message.\n"
-    "   :type message: str | Callable[[Any, ...], str | None]\n");
+    "   :type message: str | Callable[..., str | None]\n"
+    "   :arg args: A sequence of arguments to pass to ``message``, if it's a callable, "
+    "otherwise argument is not available.\n"
+    "   :type args: Any\n");
 
 static PyObject *BPY_rna_operator_poll_message_set(PyObject * /*self*/, PyObject *args)
 {

source/blender/python/intern/bpy_rna_types_capi.cc

@@ -155,9 +155,9 @@ PyDoc_STRVAR(
     "\n"
     "   :arg callback:\n"
     "      A function that will be called when the cursor is drawn.\n"
-    "      It gets the specified arguments as input with the mouse position (tuple) as last "
-    "argument.\n"
-    "   :type callback: Callable[[Any, ..., tuple[int, int]], Any]\n"
+    "      It gets the specified arguments as input with the mouse position "
+    "(``tuple[int, int]``) as last argument.\n"
+    "   :type callback: Callable[..., Any]\n"
     "   :arg args: Arguments that will be passed to the callback.\n"
     "   :type args: tuple[Any, ...]\n"
     "   :arg space_type: The space type the callback draws in; for example ``VIEW_3D``. "
@@ -229,7 +229,7 @@ PyDoc_STRVAR(
     "   :arg callback:\n"
     "      A function that will be called when the region is drawn.\n"
     "      It gets the specified arguments as input, it's return value is ignored.\n"
-    "   :type callback: Callable[[Any, ...], Any]\n"
+    "   :type callback: Callable[..., Any]\n"
     "   :arg args: Arguments that will be passed to the callback.\n"
     "   :type args: tuple[Any, ...]\n"
     "   :arg region_type: The region type the callback draws in; usually ``WINDOW``. "