Fix T92469: Transform tools inaccessible in weight-paint + pose mode

Expose transform tools when in weight paint mode with pose-mode enabled,
displaying transform tools in the toolbar, as is already done in
object & pose mode.

These are only shown when weight-paint + pose mode are active at once.

This allows single key-strokes to activate tools, needed when
tool-access is set as the default action for G/R/S key bindings.

Reviewed By: JulienKaspar

Ref D13028

release/scripts/startup/bl_ui/space_toolsystem_toolbar.py

@@ -3001,7 +3001,11 @@ class VIEW3D_PT_tools_active(ToolSelectPanelHelper, Panel):
             ),
             None,
             lambda context: (
-                (_defs_view3d_generic.cursor,)
+                (
+                    _defs_view3d_generic.cursor,
+                    None,
+                    *VIEW3D_PT_tools_active._tools_transform,
+                )
                 if context is None or context.pose_object
                 else ()
             ),