Save changes in settings when unmounting (#1152)

## Description

Save changes in settings when unmounting e.g. when switiching to another
tab

## Steps for reproduction

1. change instance name in settings
2. switch to another tab
3. should save

## Code Review

- [ ] hi @rpominov , I need you to do
  - conceptual review (architecture, feature-correctness)
  - detailed review (read every line)
  - test it on preview

## Before requesting a review

- [ ] made a self-review
- [ ] added inline comments where things may be not obvious (the "why",
not "what")

## Before merging

- [ ] tested locally and on preview environment (preview dev login:
5de6)
- [ ] updated [test
cases](https://github.com/webstudio-is/webstudio-builder/blob/main/apps/builder/docs/test-cases.md)
document
- [ ] added tests
- [ ] if any new env variables are added, added them to `.env.example`
and the `builder/env-check.js` if mandatory

apps/builder/app/builder/features/settings-panel/use-settings-logic.ts

@@ -1,6 +1,11 @@
 import type { Instance } from "@webstudio-is/project-build";
 import store from "immerhin";
-import { type KeyboardEventHandler, useRef } from "react";
+import {
+  type KeyboardEventHandler,
+  useRef,
+  useEffect,
+  useCallback,
+} from "react";
 import { instancesStore } from "~/shared/nano-states";
 
 type SettingUpdate = { label?: string };
@@ -17,14 +22,14 @@ export const useSettingsLogic = ({
     changes.current.label = value || undefined;
   };
 
-  const updateLabel = () => {
+  const updateLabel = useCallback(() => {
     store.createTransaction([instancesStore], (instances) => {
       const instance = instances.get(selectedInstance.id);
       if (instance !== undefined) {
         instance.label = changes.current.label;
       }
     });
-  };
+  }, [selectedInstance]);
 
   const handleKeyDown: KeyboardEventHandler = (event) => {
     if (event.key === "Enter") {
@@ -32,6 +37,9 @@ export const useSettingsLogic = ({
     }
   };
 
+  // Save changes when unmounting, e.g. when switiching to another tab
+  useEffect(() => updateLabel, [updateLabel]);
+
   return {
     setLabel,
     handleBlur: updateLabel,