fix: avoid additional space when space key is pressed

Close #16

Author: javier-godoy

src/main/resources/META-INF/frontend/fc-xterm/xterm-element.ts

@@ -155,13 +155,7 @@ export class XTermElement extends LitElement implements TerminalMixin {
       this.customKeyEventHandlers.handle(this, ev);
       if (ev.cancelBubble) return false;
 
-      if (ev.key==' ') {
-          term.write(' ');
-          return false;
-      } else {
-          return true;
-      }
- 
+      return true; 
     });   
   }