refactor: rename draggingElement -> newElement (#8294)

* add newElement to appState

* freedraw should not be an editing element

* do not set editing element for freedraw and generic

* remove ununsed `appState.draggingElement`

* remove setting dragged for new linear element

* decouple selection element from new element

* fix hint for text bindables

* update snapshot

* fixes

* fix frame regressions

* add comments to types

* document `editingElement`

---------

Co-authored-by: dwelle <5153846+dwelle@users.noreply.github.com>

packages/excalidraw/appState.ts

@@ -41,7 +41,7 @@ export const getDefaultAppState = (): Omit<
     currentHoveredFontFamily: null,
     cursorButton: "up",
     activeEmbeddable: null,
-    draggingElement: null,
+    newElement: null,
     editingElement: null,
     editingGroupId: null,
     editingLinearElement: null,
@@ -160,7 +160,7 @@ const APP_STATE_STORAGE_CONF = (<
   currentHoveredFontFamily: { browser: false, export: false, server: false },
   cursorButton: { browser: true, export: false, server: false },
   activeEmbeddable: { browser: false, export: false, server: false },
-  draggingElement: { browser: false, export: false, server: false },
+  newElement: { browser: false, export: false, server: false },
   editingElement: { browser: false, export: false, server: false },
   editingGroupId: { browser: true, export: false, server: false },
   editingLinearElement: { browser: false, export: false, server: false },