fix: save enabled for new tags and update link-preview on url change

[Suksham-sharma]

This PR addresses two issues in the link-builder modal:

1. Save Option Not Enabled for New Tags

• Fixed the issue where adding new tags did not enable the "Save" button.
• Now, creating new tags in the URL link modal properly enables the "Save" option, allowing users to save their changes.

2. Link Preview Not Updating

• Resolved a bug where the link preview was not being updated after it was initially set.
• Updated the code to ensure that the link preview dynamically reflects any changes made to the associated information.

Changes Made
Adjusted the logic for enabling the "Save" button in response to new tag creation.
Modified the update mechanism for the link preview to ensure it reflects all updates whenever the info is updated

Testing

• Verified that creating new tags enables the "Save" option.

Earlier:

Screen.Recording.2024-12-20.at.12.10.16.AM.mp4

Fixed:

Screen.Recording.2024-12-20.at.12.36.50.AM.mp4

• Confirmed that changes to the URL update the link preview as expected.

Earlier:

Screen.Recording.2024-12-22.at.3.04.48.AM.mp4

Fixed:

Screen.Recording.2024-12-22.at.3.06.50.AM.mp4

Resolves #1812
Resolves #1781

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[steven-tey]

What a beautiful fix, thank you!