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

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

Review Checklist

This section is for contributors to review your work.

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

[OEvgeny]

Please update tests according to my comment

[OEvgeny]

We probably want to cleanup localizations as well:

BotFramework-WebChat/packages/api/src/localization/en-US.json

Lines 74 to 90 in e069c62

	"KEYBOARD_HELP_CHAT_HISTORY_ACCESS_ITEMS_IN_MESSAGE_BODY": "Enter key",
	"KEYBOARD_HELP_CHAT_HISTORY_ACCESS_ITEMS_IN_MESSAGE_HEADER": "Access items in message",
	"KEYBOARD_HELP_CHAT_HISTORY_HEADER": "Chat history",
	"KEYBOARD_HELP_CHAT_HISTORY_LEAVE_MESSAGE_BODY": "Escape key",
	"KEYBOARD_HELP_CHAT_HISTORY_LEAVE_MESSAGE_HEADER": "Exit message",
	"_KEYBOARD_HELP_CHAT_HISTORY_LEAVE_MESSAGE_HEADER.comment": "While focus is on the message, when the user press ESCAPE key, it should exit the message focus mode and focus back on the text box in the send box.",
	"KEYBOARD_HELP_CHAT_HISTORY_MOVE_BETWEEN_ITEMS_BODY": "Tab key\nShift + tab key",
	"KEYBOARD_HELP_CHAT_HISTORY_MOVE_BETWEEN_ITEMS_HEADER": "Move between items in a message",
	"KEYBOARD_HELP_CHAT_HISTORY_MOVE_BETWEEN_MESSAGES_BODY": "Arrow up key\nArrow down key",
	"KEYBOARD_HELP_CHAT_HISTORY_MOVE_BETWEEN_MESSAGES_HEADER": "Move between messages",
	"KEYBOARD_HELP_CHAT_WINDOW_BODY_DO_ACTION_BODY": "Enter key",
	"KEYBOARD_HELP_CHAT_WINDOW_BODY_DO_ACTION_HEADER": "Do action",
	"KEYBOARD_HELP_CHAT_WINDOW_BODY_MOVE_BETWEEN_ITEMS_BODY": "Tab key\nShift + tab key",
	"KEYBOARD_HELP_CHAT_WINDOW_BODY_MOVE_BETWEEN_ITEMS_HEADER": "Move between items in the chat window",
	"KEYBOARD_HELP_CHAT_WINDOW_HEADER": "Chat window",
	"KEYBOARD_HELP_CLOSE_BUTTON_ALT": "Close",
	"KEYBOARD_HELP_HEADER": "Keyboard controls",

[OEvgeny]

We probably want to cleanup localizations as well:

BotFramework-WebChat/packages/api/src/localization/en-US.json

Lines 74 to 90 in e069c62

	"KEYBOARD_HELP_CHAT_HISTORY_ACCESS_ITEMS_IN_MESSAGE_BODY": "Enter key",
	"KEYBOARD_HELP_CHAT_HISTORY_ACCESS_ITEMS_IN_MESSAGE_HEADER": "Access items in message",
	"KEYBOARD_HELP_CHAT_HISTORY_HEADER": "Chat history",
	"KEYBOARD_HELP_CHAT_HISTORY_LEAVE_MESSAGE_BODY": "Escape key",
	"KEYBOARD_HELP_CHAT_HISTORY_LEAVE_MESSAGE_HEADER": "Exit message",
	"_KEYBOARD_HELP_CHAT_HISTORY_LEAVE_MESSAGE_HEADER.comment": "While focus is on the message, when the user press ESCAPE key, it should exit the message focus mode and focus back on the text box in the send box.",
	"KEYBOARD_HELP_CHAT_HISTORY_MOVE_BETWEEN_ITEMS_BODY": "Tab key\nShift + tab key",
	"KEYBOARD_HELP_CHAT_HISTORY_MOVE_BETWEEN_ITEMS_HEADER": "Move between items in a message",
	"KEYBOARD_HELP_CHAT_HISTORY_MOVE_BETWEEN_MESSAGES_BODY": "Arrow up key\nArrow down key",
	"KEYBOARD_HELP_CHAT_HISTORY_MOVE_BETWEEN_MESSAGES_HEADER": "Move between messages",
	"KEYBOARD_HELP_CHAT_WINDOW_BODY_DO_ACTION_BODY": "Enter key",
	"KEYBOARD_HELP_CHAT_WINDOW_BODY_DO_ACTION_HEADER": "Do action",
	"KEYBOARD_HELP_CHAT_WINDOW_BODY_MOVE_BETWEEN_ITEMS_BODY": "Tab key\nShift + tab key",
	"KEYBOARD_HELP_CHAT_WINDOW_BODY_MOVE_BETWEEN_ITEMS_HEADER": "Move between items in the chat window",
	"KEYBOARD_HELP_CHAT_WINDOW_HEADER": "Chat window",
	"KEYBOARD_HELP_CLOSE_BUTTON_ALT": "Close",
	"KEYBOARD_HELP_HEADER": "Keyboard controls",

Done

[OEvgeny]

Closes #4995
Closes #4996
Closes #4997
as well