Fix T84796: Particle tool properties displayed for select tool

When using particle mode, the particle tool settings were always
displayed, even if select/cursor is the active tool. This patch
hides the properties of the particle tools for non-brush tools,
using the same check as in other modes.

Differential Revision: https://developer.blender.org/D10266

release/scripts/startup/bl_ui/space_view3d_toolbar.py

@@ -333,6 +333,17 @@ class VIEW3D_PT_tools_particlemode(Panel, View3DPaintPanel):
         layout.use_property_split = True
         layout.use_property_decorate = False  # No animation.
 
+        from bl_ui.space_toolsystem_common import ToolSelectPanelHelper
+        tool_context = ToolSelectPanelHelper.tool_active_from_context(context)
+
+        if not tool_context:
+            # If there is no active tool, then there can't be an active brush.
+            tool = None
+
+        if not tool_context.has_datablock:
+            # tool.has_datablock is always true for tools that use brushes.
+            tool = None
+
         if tool is not None:
             col = layout.column()
             col.prop(brush, "size", slider=True)