Keymap: improve tweak tool consistency & behavior

Remove experimental options & make them default:
- Tweak Select: Mouse Select & Move
- Tweak Tool: Left Mouse Select & Move

Changes:

- LMB press selects the element
  (unless it's already selected - in that case no selection takes place).
- LMB drag moves the selection.
- LMB click selects the element
  (deselecting all others).

Implications:

- This makes it possible to tweak more than one item at a time.
- It is no longer possible to set the 3D cursor with LMB when the tweak
  tool is active.

Details:

- Shift-LMB remains unchanged.
- RMB selection remains unchanged.
- Blender 2.7 key-map remains unchanged.

Addresses design task #96544.

scripts/presets/keyconfig/Blender.py

@@ -97,26 +97,6 @@ class Prefs(bpy.types.KeyConfigPreferences):
         default=False,
         update=update_fn,
     )
-    # Experimental: only show with developer extras, see: #96544.
-    use_tweak_select_passthrough: BoolProperty(
-        name="Tweak Select: Mouse Select & Move",
-        description=(
-            "The tweak tool is activated immediately instead of placing the cursor. "
-            "This is an experimental preference and may be removed"
-        ),
-        default=False,
-        update=update_fn,
-    )
-    # Experimental: only show with developer extras, see: #96544.
-    use_tweak_tool_lmb_interaction: BoolProperty(
-        name="Tweak Tool: Left Mouse Select & Move",
-        description=(
-            "The tweak tool is activated immediately instead of placing the cursor. "
-            "This is an experimental preference and may be removed"
-        ),
-        default=False,
-        update=update_fn,
-    )
 
     use_alt_click_leader: BoolProperty(
         name="Alt Click Tool Prompt",
@@ -313,12 +293,6 @@ class Prefs(bpy.types.KeyConfigPreferences):
         row = sub.row()
         row.prop(self, "use_select_all_toggle")
 
-        if show_developer_ui:
-            row = sub.row()
-            row.prop(self, "use_tweak_select_passthrough")
-        if show_developer_ui and (not is_select_left):
-            row = sub.row()
-            row.prop(self, "use_tweak_tool_lmb_interaction")
         if show_developer_ui:
             row = sub.row()
             row.prop(self, "use_region_toggle_pie")
@@ -385,11 +359,6 @@ def load():
                 # Otherwise LMB activates the fallback tool and RMB always tweak-selects.
                 (kc_prefs.rmb_action != 'FALLBACK_TOOL')
             ),
-            use_tweak_select_passthrough=(show_developer_ui and kc_prefs.use_tweak_select_passthrough),
-            use_tweak_tool_lmb_interaction=(
-                False if is_select_left else
-                (show_developer_ui and kc_prefs.use_tweak_tool_lmb_interaction)
-            ),
             use_alt_tool_or_cursor=(
                 (not use_mouse_emulate_3_button) and
                 (kc_prefs.use_alt_tool if is_select_left else kc_prefs.use_alt_cursor)

scripts/presets/keyconfig/keymap_data/blender_default.py

@@ -41,7 +41,6 @@ class Params:
         # - Click selects only the item at the cursor position.
         # See: #97032.
         "use_tweak_select_passthrough",
-        "use_tweak_tool_lmb_interaction",
         "use_mouse_emulate_3_button",
 
         # User preferences:
@@ -120,8 +119,6 @@ class Params:
             use_gizmo_drag=True,
             use_fallback_tool=False,
             use_fallback_tool_select_handled=True,
-            use_tweak_select_passthrough=False,
-            use_tweak_tool_lmb_interaction=False,
             use_v3d_tab_menu=False,
             use_v3d_shade_ex_pie=False,
             use_v3d_mmb_pan=False,
@@ -152,8 +149,6 @@ class Params:
             else:
                 self.tool_maybe_tweak_value = 'CLICK_DRAG'
 
-            self.use_tweak_tool_lmb_interaction = use_tweak_tool_lmb_interaction
-
             self.context_menu_event = {"type": 'W', "value": 'PRESS'}
 
             # Use the "cursor" functionality for RMB select.
@@ -174,7 +169,6 @@ class Params:
             self.action_mouse = 'RIGHTMOUSE'
             self.tool_mouse = 'LEFTMOUSE'
             self.tool_maybe_tweak_value = 'CLICK_DRAG'
-            self.use_tweak_tool_lmb_interaction = False
 
             if self.legacy:
                 self.context_menu_event = {"type": 'W', "value": 'PRESS'}
@@ -211,7 +205,7 @@ class Params:
 
         self.use_file_single_click = use_file_single_click
 
-        self.use_tweak_select_passthrough = use_tweak_select_passthrough
+        self.use_tweak_select_passthrough = not legacy
 
         self.use_fallback_tool = use_fallback_tool
 
@@ -579,7 +573,7 @@ def _template_items_tool_select(
             select_passthrough = params.use_tweak_select_passthrough
         else:
             if not cursor_prioritize:
-                select_passthrough = params.use_tweak_tool_lmb_interaction
+                select_passthrough = True
 
         if select_passthrough:
             return [