feat: add enter key support to execute queries in QuerySearch

[tajbaba999]

Description

• Enabled executing queries with the Enter key in QuerySearch, improving workflow and user experience without affecting existing UI behavior.

• Closes: Logs search bar should submit when you press enter #9324

[welcome]

Welcome to the SigNoz community! Thank you for your first pull request and making this project better. 🤗

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
1 out of 2 committers have signed the CLA.

✅ aks07
❌ tajbaba999
_{You have signed the CLA already but the status is still pending? Let us recheck it.}