Fixes fancy-box.tsx bugs

[AbrahamX3]

What does this PR fix?

• Appending space bug removes create new button
• Spamming search input freezes browser tab.

Notes and Research

The Freezing

Upon investigating the freezes, I tested with some debounce hooks to see if it fixes the issue, which It did. Testing with different delays it seems like it worked with the most minimal delay (0.1), In the code I am providing, I used a simple setTimeout with a delay of 0.1. The risk of a memory leak is very minimal, but I recommend a full-fledged debounce hook with a cleanup function if used in production. This stops the freezing, although it does get a bit laggy if you do end up spamming for quite a while.

The space bug

The code provided successfully identifies the spaces or whitespace and adds it to the render condition; it also trims out the value if you do have some whitespace, you're still able to add labels with a space and trims it upon creating a new label.

Demonstration

Testing spam freezes

chrome_3oHVmdHvep.mp4

Testing space bug

chrome_P305WgxSAy.mp4

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