Allow removing a rigid-body without auto-removing attached colliders

.vscode/tasks.json

@@ -2,6 +2,11 @@
     // See https://go.microsoft.com/fwlink/?LinkId=733558
     // for the documentation about the tasks.json format
     "version": "2.0.0",
+    "options": {
+        "env": {
+            "RUST_BACKTRACE": "1"
+        }
+    },
     "tasks": [
         {
             "label": "run 3d (no-simd - release) ",