Refactor Modal to Use up-window-container

[lucasferreiralimax]

This PR refactors the modal structure by introducing a new up-window-container component. The overlay-related logic and class bindings are moved outside the modal content to improve separation of concerns.

Changes:

• Wrapped the modal inside a new up-window-container.
• Moved overlay class bindings (blur, grayscale, active, etc.) to up-window-container.
• Kept modal content (up-window) intact but cleaned up class and event handling.

Benefits:

• Improved code organization and readability.
• Clear distinction between overlay and modal content.
• Easier to manage animations and visual effects in the future.

Testing:

• Verified that the modal opens, closes, and behaves as expected.
• Confirmed the proper application of animations and visual effects.

[github-actions]

Visit the preview URL for this PR (updated for commit f70d08f):

https://up-window-angular--pr21-refactory-overlay-r0gwbfsv.web.app

_{(expires Thu, 24 Oct 2024 18:15:07 GMT)}

_{🔥 via Firebase Hosting GitHub Action 🌎}

_{Sign: 7822e0d6e40bbbcb5ceaa0eda2c38488d7b613f8}