Fix invalid keybind flash (#8435)

Previously the save keybind action would
- apply the new keybind
- wait for a network request to persist the change
- close the dialogue regardless of the results of the above changes

During this network request, the dialog would show a warning that the
keybind is invalid because the dialogue "contains a modified keybind
which conflicts with an existing keybind"
<img width="506" height="261" alt="image"
src="https://github.com/user-attachments/assets/e46150ce-9349-4f8e-b3b5-fb0b20dd3db9"
/>


This PR changes the order these actions are applied in.
- The dialogue is immediately closed
- The keybinding is updated if valid
- The keybinding is persisted.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-8435-Fix-invalid-keybind-flash-2f76d73d3650815c9657f35e77d331fe)
by [Unito](https://www.unito.io)

src/components/dialog/content/setting/KeybindingPanel.vue

@@ -265,18 +265,15 @@ function cancelEdit() {
 }
 
 async function saveKeybinding() {
-  if (currentEditingCommand.value && newBindingKeyCombo.value) {
-    const updated = keybindingStore.updateKeybindingOnCommand(
-      new KeybindingImpl({
-        commandId: currentEditingCommand.value.id,
-        combo: newBindingKeyCombo.value
-      })
-    )
-    if (updated) {
-      await keybindingService.persistUserKeybindings()
-    }
-  }
+  const commandId = currentEditingCommand.value?.id
+  const combo = newBindingKeyCombo.value
   cancelEdit()
+  if (!combo || commandId == undefined) return
+
+  const updated = keybindingStore.updateKeybindingOnCommand(
+    new KeybindingImpl({ commandId, combo })
+  )
+  if (updated) await keybindingService.persistUserKeybindings()
 }
 
 async function resetKeybinding(commandData: ICommandData) {