M3: component properties keep their order on rename; Make slot asks for the name (#1536, #1537) (#1565)

Properties were listed by name, so a rename moved one. Components now keep prop_order (the names as they were made; a rename keeps the place) and every listing follows it. Make slot opens a name field under the frame's Slot row; Enter makes the slot, Escape cancels, a taken name keeps the field open.

crates/format/src/rest.rs

@@ -613,7 +613,7 @@ impl<'a> Ctx<'a> {
                 },
             },
             "TEXT" => NodeKind::Text(text::text_data(self, j)),
-            "COMPONENT" => NodeKind::Component { description: description(&self.component_meta, j), props: BTreeMap::new() },
+            "COMPONENT" => NodeKind::Component { description: description(&self.component_meta, j), props: BTreeMap::new(), prop_order: Vec::new() },
             "COMPONENT_SET" => NodeKind::ComponentSet { description: description(&self.set_meta, j) },
             "SLICE" => NodeKind::Slice,
             _ => return None,