fix: flutter_keyboard_visibility WASM build bug

[geronimol]

Description

Instead of using flutter_keyboard_visibility_temp_fork, will use the fixed version of the flutter_keyboard_visibilitypackage from the new/packages directory.

Source of the fixed package: https://github.com/raldhafiri/flutter_keyboard_visibility.git

Related Issues

• Fix [Web] Issue with flutter_keyboard_visibility_web dependency when making a WASM build #2473

Type of Change

• ✨ Feature: New functionality without breaking existing features.
• 🛠️ Bug fix: Resolves an issue without altering current behavior.
• 🧹 Refactor: Code reorganization, no behavior change.
• ❌ Breaking: Alters existing functionality and requires updates.
• 🧪 Tests: New or modified tests
• 📝 Documentation: Updates or additions to documentation.
• 🗑️ Chore: Routine tasks, or maintenance.
• ✅ Build configuration change: Build/configuration changes.

[EchoEllet]

All clients are required to include this in their project to get this fix, we cannot use packages that are not uploaded to pub.dev and when we upload, we need to change the package name to something different, the flutter_keyboard_visibility_temp_fork doesn't collide with flutter_keyboard_visibility.

flutter_keyboard_visibility_web

We use flutter_keyboard_visibility_temp_fork which doesn't have this issue.

[EchoEllet]

This PR fixes an issue that's not with flutter_quill or flutter_keyboard_visibility_temp_fork AFAIK so closing the PR since we don't plan to maintain a copy of flutter_keyboard_visibility on this repo.

However, thank you for your contribution!

Update: #2473 (comment)