Repl reorder keybinding (#14824)

Ensures that the assistant keybinding for cmd-enter takes precedence
over `repl::Run`.

On Linux, `ctrl-enter` (the equivalent), issues `repl::Run` when in a
jupyter context.

Release Notes:

- N/A

assets/keymaps/default-macos.json

@@ -180,6 +180,12 @@
       "cmd-c": "markdown::Copy"
     }
   },
+  {
+    "context": "Editor && jupyter && !ContextEditor",
+    "bindings": {
+      "cmd-enter": "repl::Run"
+    }
+  },
   {
     "context": "AssistantPanel",
     "bindings": {
@@ -570,12 +576,6 @@
       "space": "project_panel::Open"
     }
   },
-  {
-    "context": "Editor && jupyter && !ContextEditor",
-    "bindings": {
-      "cmd-enter": "repl::Run"
-    }
-  },
   {
     "context": "CollabPanel && not_editing",
     "bindings": {