bsod: do not check for color support

When invoked on a running system, bsod would not print the qrcode.
The check for "color support" on stdout is pointless, since we're not
printing to stdout but to a terminal fd that is opened separately.

src/journal/bsod.c

@@ -212,7 +212,9 @@ static int display_emergency_message_fullscreen(const char *message) {
                 goto cleanup;
         }
 
-        r = print_qrcode_full(stream, "Scan the QR code", message, qr_code_start_row, qr_code_start_column, w.ws_col, w.ws_row);
+        r = print_qrcode_full(stream, "Scan the QR code",
+                              message, qr_code_start_row, qr_code_start_column, w.ws_col, w.ws_row,
+                              /* check_tty= */ false);
         if (r < 0)
                 log_warning_errno(r, "QR code could not be printed, ignoring: %m");