Fixes: add proper resizing and error validation for InputTextarea

[adiitxa]

What does this PR do?

Fixes the InputTextarea component used across the Console.

• Adds resize-y, min-h, and max-h Tailwind classes for better user experience and content visibility.
• Improves validation handling by showing required field errors clearly using native on:invalid handling.

Related Issue

Fixes the bug reported in appwrite/appwrite#10076

Type of change

• [x] 🐛 Bug fix

[adiitxa]

Hey team 👋 just following up on this PR. It fixes textarea resizing and required field validation in the Console UI. Kindly requesting a review. Linked to issue #10076. Thanks in advance!