(fix)chat: fix the string and correct the programmer-mode icon

[Randall-Jiang]

Problem

Solution

Notice

This pr includes the update for beta version mynah ui.

• Treat all work as PUBLIC. Private feature/x branches will not be squash-merged at release time.
• Your code changes must meet the guidelines in CONTRIBUTING.md.
• License: I confirm that my contribution is made under the terms of the Apache 2.0 license.

[github-actions]

• This pull request modifies code in src/* but no tests were added/updated.
  • Confirm whether tests should be added or ensure the PR description explains why tests are not required.

[justinmk3]

please read the failing ci message.