fix(chat): fix broken chat settings UI for mobile view (Issue #1653)

[denys-kolomiitsev]

Description:

• Fix the broken UI for the chat settings modal in mobile view

Issues:

• Issue #1653

UI changes

Checklist:

• [x] the pull request name complies with Conventional Commits
• [x] the pull request name starts with fix(<scope>):, feat(<scope>):, feature(<scope>):, chore(<scope>):, hotfix(<scope>): or e2e(<scope>):. If contains breaking changes then the pull request name must start with fix(<scope>)!:, feat(<scope>)!:, feature(<scope>)!:, chore(<scope>)!:, hotfix(<scope>)!: or e2e(<scope>)!: where <scope> is name of affected project: chat, chat-e2e, overlay, shared, sandbox-overlay, etc.
• [x] the pull request name ends with (Issue #<TICKET_ID>) (comma-separated list of issues)
• [x] I confirm that do not share any confidential information like API keys or any other secrets and private URLs

[denys-kolomiitsev]

/deploy-review

Environment URL: https://chat-ai-dial-chat-pr-1659.nightly-test.deltixhub.io E2E tests status: success

[denys-kolomiitsev]

/deploy-review

Environment URL: https://chat-ai-dial-chat-pr-1659.nightly-test.deltixhub.io E2E tests status: success