remove keyboard helper screen from web chat

[amirmursal]

Fix candidate for #5220, #5212, #4965, #4918

Changelog Entry

Fixes #4965. Removed keyboard helper screen in #5234, by @amirmursal

Description

Removed keyboard control screen from the chat window to address several accessibility issues

• [x] I have added tests and executed them locally
• [x] I have updated CHANGELOG.md
• [x] I have updated documentation

Review Checklist

This section is for contributors to review your work.

• [x] Accessibility reviewed (tab order, content readability, alt text, color contrast)
• [x] ~Browser and platform compatibilities reviewed~
• [x] ~CSS styles reviewed (minimal rules, no z-index)~
• [x] Documents reviewed (docs, samples, live demo)
• [x] ~Internationalization reviewed (strings, unit formatting)~
• [x] ~package.json and package-lock.json reviewed~
• [x] ~Security reviewed (no data URIs, check for nonce leak)~
• [x] Tests reviewed (coverage, legitimacy)

[OEvgeny]

We probably want to cleanup localizations as well: https://github.com/microsoft/BotFramework-WebChat/blob/e069c6258cce746d27f540858ef62f773baa45c5/packages/api/src/localization/en-US.json#L74-L90

[OEvgeny]

We probably want to cleanup localizations as well:

https://github.com/microsoft/BotFramework-WebChat/blob/e069c6258cce746d27f540858ef62f773baa45c5/packages/api/src/localization/en-US.json#L74-L90

Done

[OEvgeny]

Closes #4995 Closes #4996 Closes #4997 as well