Fix: Grease Pencil: Stroke method shortcut in sculpt mode

Use `Alt E` to invoke stroke method enum menu. This is done for other
objects/modes, except grease pencil.

Mentioned in #147019

Pull Request: https://projects.blender.org/blender/blender/pulls/147034

scripts/presets/keyconfig/keymap_data/blender_default.py

@@ -4212,6 +4212,8 @@ def km_grease_pencil_sculpt_mode(params):
         # Auto-masking menu.
         op_menu_pie("VIEW3D_MT_grease_pencil_sculpt_automasking_pie", {
                     "type": 'A', "value": 'PRESS', "shift": True, "alt": True}),
+        ("wm.context_menu_enum", {"type": 'E', "value": 'PRESS', "alt": True},
+         {"properties": [("data_path", "tool_settings.gpencil_sculpt_paint.brush.stroke_method")]}),
 
         *_template_paint_radial_control("gpencil_sculpt_paint"),
         *_template_asset_shelf_popup("VIEW3D_AST_brush_gpencil_sculpt", params.spacebar_action),