patch 8.2.3341: Vim9: function call aborted despite try/catch

Problem:    Vim9: function call aborted despite try/catch. (Naohiro Ono)
Solution:   Ignore error caught by try/catch. (closes #8755)

src/message.c

@@ -733,7 +733,7 @@ emsg_core(char_u *s)
 	    flush_buffers(FLUSH_MINIMAL);  // flush internal buffers
 	++did_emsg;			   // flag for DoOneCmd()
 #ifdef FEAT_EVAL
-	did_uncaught_emsg = TRUE;
+	++uncaught_emsg;
 #endif
     }