feat: add HoneyToast component for persistent progress notifications (#7902)

## Summary

Add HoneyToast, a persistent bottom-anchored notification component for
long-running task progress, and migrate existing progress dialogs to use
it.

## Changes

- **What**: 
- New `HoneyToast` component with slot-based API, Teleport, transitions,
and accessibility
  - Migrated `ModelImportProgressDialog` to use HoneyToast
- Created `ManagerProgressToast` combining the old Header/Content/Footer
components
- Deleted deprecated `ManagerProgressDialogContent`,
`ManagerProgressHeader`, `ManagerProgressFooter`, and
`useManagerProgressDialogStore`
- Removed no-op
`showManagerProgressDialog`/`toggleManagerProgressDialog` functions
  - Added Storybook stories for HoneyToast and ProgressToastItem

## Review Focus

- HoneyToast component design and slot API
- ManagerProgressToast self-contained state management (auto-shows when
`comfyManagerStore.taskLogs.length > 0`)
- Accessibility attributes on the toast component

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7902-feat-add-HoneyToast-component-for-persistent-progress-notifications-2e26d73d365081c78ae6edc5accb326e)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Amp <amp@ampcode.com>
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
Co-authored-by: sno <snomiao@gmail.com>
Co-authored-by: github-actions <github-actions@github.com>
Co-authored-by: GitHub Action <action@github.com>

package.json

@@ -66,6 +66,7 @@
     "@prettier/plugin-oxc": "catalog:",
     "@sentry/vite-plugin": "catalog:",
     "@storybook/addon-docs": "catalog:",
+    "@storybook/addon-mcp": "catalog:",
     "@storybook/vue3": "catalog:",
     "@storybook/vue3-vite": "catalog:",
     "@tailwindcss/vite": "catalog:",