Sculpt: Invert Expand behavior for masking consistency

This patch makes sure that each of the expand keymap entries will use consistent "invert" and "use_mask_preserve" properties.

Based on previous discussions we decided to flip the default Mask Expand behavior.
This has multiple benefited:

- The mask creation is more consistent with other masking tools (Always add to existing mask. Mask selected areas)
- It's easier to use expanding for masking face sets (Snapping with `Ctrl`) or building a mask from repeated operations
- It's less likely to mask certain areas unintentionally (Loose mesh islands)
- If the current behavior is desired for an expand operation the user can use `E` & `F` in the modal keymap (Which is less often the case).

If we want to revisit the original design of inverted masking again in the future we should do this via {T97903}.

Reviewed By: Joseph Eagar
Differential Revision https://developer.blender.org/D16434
Ref D16434

release/scripts/presets/keyconfig/keymap_data/blender_default.py

@@ -5049,20 +5049,31 @@ def km_sculpt(params):
          {"properties": [("mode", 'SMOOTH')]}),
         # Expand
         ("sculpt.expand", {"type": 'A', "value": 'PRESS', "shift": True},
-         {"properties": [("target", "MASK"), ("falloff_type", "GEODESIC"), ("invert", True)]}),
+         {"properties": [
+            ("target", "MASK"),
+            ("falloff_type", "GEODESIC"),
+            ("invert", True),
+            ("use_auto_mask", True),
+            ("use_mask_preserve" , True)]}),
         ("sculpt.expand", {"type": 'A', "value": 'PRESS', "shift": True, "alt": True},
-         {"properties": [("target", "MASK"), ("falloff_type", "NORMALS"), ("invert", False)]}),
+         {"properties": [
+            ("target", "MASK"),
+            ("falloff_type", "NORMALS"),
+            ("invert", False),
+            ("use_mask_preserve" , True)]}),
         ("sculpt.expand", {"type": 'W', "value": 'PRESS', "shift": True},
          {"properties": [
              ("target", "FACE_SETS"),
              ("falloff_type", "GEODESIC"),
              ("invert", False),
+             ("use_mask_preserve" , False),
              ("use_modify_active", False)]}),
         ("sculpt.expand", {"type": 'W', "value": 'PRESS', "shift": True, "alt": True},
          {"properties": [
              ("target", "FACE_SETS"),
              ("falloff_type", "BOUNDARY_FACE_SET"),
              ("invert", False),
+             ("use_mask_preserve" , False),
              ("use_modify_active", True),
          ]}),
         # Partial Visibility Show/hide