fix: prevent keypress memory leak with multiple Inquirerer instances

- TerminalKeypress.pause() now resets raw mode (setRawMode(false)) to prevent
  raw mode from leaking into subsequent text prompts after checkbox/autocomplete
- Inquirerer.close() now nullifies this.rl and this.keypress references so
  subsequent calls detect the closed state and double-close is safe

Author: pyramation

packages/inquirerer/src/keypress.ts

@@ -150,6 +150,9 @@ export class TerminalKeypress {
   pause(): void {
     this.active = false;
     this.clearHandlers();
+    if (typeof (this.input as any).setRawMode === 'function') {
+      (this.input as any).setRawMode(false);
+    }
   }
 
   resume(): void {

packages/inquirerer/src/prompt.ts

@@ -1329,7 +1329,11 @@ export class Inquirerer {
   public close() {
     if (this.rl) {
       this.rl.close();
+      this.rl = null;
+    }
+    if (this.keypress) {
       this.keypress.destroy();
+      this.keypress = null;
     }
   }
 }