fix: /help remove flickering and respect clear shortcut (ctr+l) (#3611)

Co-authored-by: Jacob Richman <jacob314@gmail.com>
Co-authored-by: Allen Hutchison <adh@google.com>

packages/cli/src/ui/hooks/useGeminiStream.ts

@@ -82,7 +82,6 @@ export const useGeminiStream = (
   geminiClient: GeminiClient,
   history: HistoryItem[],
   addItem: UseHistoryManagerReturn['addItem'],
-  setShowHelp: React.Dispatch<React.SetStateAction<boolean>>,
   config: Config,
   onDebugMessage: (message: string) => void,
   handleSlashCommand: (
@@ -610,7 +609,6 @@ export const useGeminiStream = (
         return;
 
       const userMessageTimestamp = Date.now();
-      setShowHelp(false);
 
       // Reset quota error flag when starting a new query (not a continuation)
       if (!options?.isContinuation) {
@@ -693,7 +691,6 @@ export const useGeminiStream = (
     },
     [
       streamingState,
-      setShowHelp,
       setModelSwitchedFromQuotaError,
       prepareQueryForGemini,
       processGeminiStreamEvents,