options: make --rawsequences disable --mouse, to prevent entering junk

When using --raw, ncurses does not catch and convert any mouse event,
and thus the coordinates of a mouse click would get inserted into the
buffer as seemingly random characters.  So, let --rawsequences override
and disable --mouse, to prevent the accidental entering of junk.

This fixes https://savannah.gnu.org/bugs/?55303.

src/nano.c

@@ -2430,6 +2430,10 @@ int main(int argc, char **argv)
 #endif
 	}
 
+	/* When getting untranslated escape sequences, the mouse cannot be used. */
+	if (ISSET(RAW_SEQUENCES))
+		UNSET(USE_MOUSE);
+
 #ifdef ENABLE_HISTORIES
 	/* Initialize the pointers for the Search/Replace/Execute histories. */
 	history_init();