Unhide cursor on RIS (\033c)

It is unclear if it's "required" to do this on RIS, but it's useful when
calling reset(1) after interactive programs have crashed and garbled up
the screen.

FWIW, other terminals do it as well (tested with XTerm, VTE, Kitty,
Alacritty, Linux VT).

ref.
https://git.suckless.org/st/commit/559fdc278681c98470749adb59f01cd071720458.html

st.c

@@ -3079,6 +3079,7 @@ eschandle(uchar ascii)
 		#endif // CSI_22_23_PATCH
 		resettitle();
 		xloadcols();
+		xsetmode(0, MODE_HIDE);
 		#if SCROLLBACK_PATCH
 		if (!IS_SET(MODE_ALTSCREEN)) {
 			term.scr = 0;