[ADE-200] UI fixes

[adamrefaey]

Change

UI fixes

Does this PR introduce a breaking change?

{...}

What needs to be documented once your changes are merged?

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Additional Comments

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[Copilot]

Pull Request Overview

This PR addresses minor UI fixes across multiple components. Key changes include:

• Adding a close button to the ChatPage that navigates the user back to the home tab.
• Removing the empty state message in ChatContainer for situations with no messages.
• Wrapping the AIAssistantModal’s content in a new container to improve layout structure.

Reviewed Changes

Copilot reviewed 3 out of 5 changed files in this pull request and generated 1 comment.

File	Description
frontend/src/pages/Chat/ChatPage.tsx	Added a close button with navigation functionality.
frontend/src/common/components/Chat/ChatContainer.tsx	Modified rendering logic by removing the empty state message.
frontend/src/common/components/AIAssistant/AIAssistantModal.tsx	Introduced a wrapper div to structure modal content layout.

Files not reviewed (2)

• frontend/src/common/components/AIAssistant/AIAssistantModal.scss: Language not supported
• frontend/src/common/components/Chat/ChatInput.scss: Language not supported

Comments suppressed due to low confidence (1)

frontend/src/common/components/Chat/ChatContainer.tsx:41

• [nitpick] The removal of the empty state UI element may lead to a blank chat container when there are no messages. If this change is not intentional, consider adding a placeholder to guide the user.

{messages.length === 0 ? (<div className="chat-empty-state" data-testid={`${testid}-empty`}><p>{t('aiAssistant.emptyState', 'How can I help you today?')}</p></div>) : (