Implement additional readline-like keybindings, including alt-left arrow and alt-right arrow. (#443)

This change adds keybinding support for:

  - `Ctrl+B`: Moves the cursor backward one character.
  - `Ctrl+F`: Moves the cursor forward one character.
  - `Alt+Left Arrow`: Moves the cursor backward one word.
  - `Alt+Right Arrow`: Moves the cursor forward one word.

Closes b/411469305.

packages/cli/src/ui/App.tsx

@@ -375,7 +375,6 @@ export const App = ({
                   navigateSuggestionUp={completion.navigateUp}
                   navigateSuggestionDown={completion.navigateDown}
                   resetCompletion={completion.resetCompletionState}
-                  setEditorState={setEditorState}
                   onClearScreen={handleClearScreen} // Added onClearScreen prop
                   shellModeActive={shellModeActive}
                   setShellModeActive={setShellModeActive}