patch 8.2.1457: Vim9: the output of :disassemble cannot be interrupted

Problem:    Vim9: the output of :disassemble cannot be interrupted.
Solution:   Check got_int. (closes #6715)

src/version.c

@@ -754,6 +754,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1457,
 /**/
     1456,
 /**/

src/vim9execute.c

@@ -3182,6 +3182,11 @@ ex_disassemble(exarg_T *eap)
 			      break;
 	    case ISN_DROP: smsg("%4d DROP", current); break;
 	}
+
+	out_flush();	    // output one line at a time
+	ui_breakcheck();
+	if (got_int)
+	    break;
     }
 }