Svelte. Popup/f7Popup backdrop is not disposed onDestroy (With demo)

[ievgennaida]

Framework 7 popup backdrop remains when popup is unmounted in svelte.

  "dependencies": {
    "framework7": "^8.3.0",
    "framework7-svelte": "^8.3.0",
    "svelte": "^4.2.0"
  },
  "devDependencies": {
    "@sveltejs/vite-plugin-svelte": "^2.4.5",
    "vite": "^4.4.9"
  }

DEMO LINK: https://codesandbox.io/p/devbox/loving-visvesvaraya-vhyrxx?file=%2Fsrc%2Fcomponents%2Fapp.svelte%3A12%2C6

Platform and Target: Chrome

Describe the bug

1. Open demo
2. Click button to open popup
3. Simulate that component is unmounted (Ex: using ifs in svelte)
4. See that component is not unmouting related backdrop on dispose.

Expected behavior Popup is closed and unmounted with the backdrop overlay.

Actual Behavior Popup is closed but gray backdrop is displayed.