patch 8.2.5056: the channel log only contains some of the raw terminal output

Problem:    The channel log only contains some of the raw terminal output.
Solution:   Add the "o" flag to log all terminal output.  Use it for "--log".
diff --git a/src/optionstr.c b/src/optionstr.c
index 44e178c..c26667a 100644
--- a/src/optionstr.c
+++ b/src/optionstr.c
@@ -1462,9 +1462,8 @@
 	}
 	if (varp == &T_BE && termcap_active)
 	{
-#ifdef FEAT_JOB_CHANNEL
-	    ch_log_output = TRUE;
-#endif
+	    MAY_WANT_TO_LOG_THIS;
+
 	    if (*T_BE == NUL)
 		// When clearing t_BE we assume the user no longer wants
 		// bracketed paste, thus disable it by writing t_BD.