AI-175 Fix favicon and prevent chatbot text overflow

[iramsk02]

Summary

This PR addresses two UI issues in the Next.js application:

• Replaces the default Vercel favicon with the Mifos logo
• Fixes chatbot response text overflowing its container

Related Jira Ticket

(https://mifosforge.jira.com/browse/AI-175)

Changes Made

• Added icon.png to the app root directory to override the default Vercel favicon
• Updated chatbot styles to ensure proper text wrapping and overflow handling

Testing

• Tested locally in development mode
• Verified favicon update in the browser tab
• Confirmed chatbot responses remain within the container

[staru09]

Have you tested this PR?
Please also give a snippet of the UI about what has changed.
A screenshot of before and after would be cool.

[iramsk02]

• Text Overflow before

• After

• Favicon before

• After Mifos Icon

[staru09]

lgtm
@DavidH-1 please merge this one

[DavidH-1]

needs to be against Dev not main

[DavidH-1]

please put Jira ticket ref in title

[DavidH-1]

CLA Check = FAILED please sign contributor license agreement

[iramsk02]

@DavidH-1

I've fulfilled the above mentioned requirements

• Sign Contributor Licence Agreement
• Changed Base branch Main to dev
• updated title to include jira ticket

[DavidH-1]

CLA check = passed

[DavidH-1]

Its showing a conflict before I can merge.

[iramsk02]

@DavidH-1 I've resolved the conflicts