patch 9.0.1126: bracketed paste can be enabled when it is not recognized

Problem:    Bracketed paste can be enabled when pasted text is not recognized.
Solution:   Output t_BE only when t_PS and t_PE are set.
diff --git a/src/edit.c b/src/edit.c
index 85d59d1..4a89fe1 100644
--- a/src/edit.c
+++ b/src/edit.c
@@ -3714,7 +3714,7 @@
 	MAY_WANT_TO_LOG_THIS;
 
 	// Re-enable bracketed paste mode.
-	out_str(T_BE);
+	out_str_t_BE();
 
 	// Re-enable modifyOtherKeys.
 	out_str_t_TI();