Pattern and Mirror dialogs copy picked bodies, fillets included (#193)

With Object Type = Bodies, the Mirror, Rectangular Pattern and Circular
Pattern dialogs sent the feature that created each picked body
({"features": ["Extrude1"]}), so the copies replayed only that feature and
lost everything done to the body afterwards (a fillet, a chamfer, a cut).
They now send the bodies themselves ({"bodies": [...]}), which the commands
already support and the Path Pattern dialog already did. Picking Features
is unchanged.

Editing a body Mirror or Pattern from the timeline now reopens the dialog
with its bodies selected.

Copies made this way take the body-copy names ("Body1 (2)"), as the
commands already give; pattern_direction_edge now looks up "Body1 (3)".

Tests: UI scenarios mirror_body_keeps_fillets and pattern_body_keeps_fillets
(filleted cube, copy and edit through the dialogs); both fail without the
fix with the copies' sharp 8000 mm3 volume.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

crates/ui-egui/tests/scenarios/pattern_direction_edge.json

@@ -62,7 +62,7 @@
  {
   "expect": {
    "bbox": {
-    "body": "Body3",
+    "body": "Body1 (3)",
     "min": [
      40,
      0,