patch 8.2.4858: K_SPECIAL may be escaped twice

Problem:    K_SPECIAL may be escaped twice.
Solution:   Avoid double escaping. (closes #10340)
diff --git a/src/term.c b/src/term.c
index 4044d75..bf5943d 100644
--- a/src/term.c
+++ b/src/term.c
@@ -6104,7 +6104,7 @@
 #endif
 	    slen = trans_special(&src, result + dlen, FSK_KEYCODE
 			  | ((flags & REPTERM_NO_SIMPLIFY) ? 0 : FSK_SIMPLIFY),
-								 did_simplify);
+							   TRUE, did_simplify);
 	    if (slen)
 	    {
 		dlen += slen;