patch 9.2.0178: DEC mode requests are sent even when not in raw mode

Problem:  Vim sends DEC mode query requests (DECRQM) regardless of the
          terminal mode.
Solution: Only send DEC mode requests when cur_tmode is TMODE_RAW, but
          e.g not for gui mode (Foxe Chen).

fixes:  #19709
closes: #19710

Signed-off-by: Foxe Chen <chen.foxe@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

src/term.c

@@ -4051,11 +4051,14 @@ starttermcap(void)
 	out_str(T_FE);
 #endif
 
-    // Request setting of relevant DEC modes via DECRQM
-    for (int i = 0; i < (int)ARRAY_LENGTH(dec_modes); i++)
+    if (cur_tmode == TMODE_RAW)
     {
-	vim_snprintf((char *)IObuff, IOSIZE, "\033[?%d$p", dec_modes[i]);
-	out_str(IObuff);
+	// Request setting of relevant DEC modes via DECRQM
+	for (int i = 0; i < (int)ARRAY_LENGTH(dec_modes); i++)
+	{
+	    vim_snprintf((char *)IObuff, IOSIZE, "\033[?%d$p", dec_modes[i]);
+	    out_str(IObuff);
+	}
     }
 
     out_flush();

src/version.c

@@ -734,6 +734,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    178,
 /**/
     177,
 /**/