CURLOPT: bump CURLWS_NOAUTOPONG, CURLWS_RAW_MODE macros to long

This patch bumps the size of these macros from `int` to `long`, while
keeping their actual values the same. It may cause incompatibilities in
user code, requiring the bump of holder variables and/or adding casts:

- CURLWS_NOAUTOPONG
- CURLWS_RAW_MODE

Also:
- keep existing cast within the documentation to make sure it applies
  to older curl versions as well.

Closes #18137

include/curl/websockets.h

@@ -73,8 +73,8 @@ CURL_EXTERN CURLcode curl_ws_send(CURL *curl, const void *buffer,
                                   unsigned int flags);
 
 /* bits for the CURLOPT_WS_OPTIONS bitmask: */
-#define CURLWS_RAW_MODE   (1<<0)
-#define CURLWS_NOAUTOPONG (1<<1)
+#define CURLWS_RAW_MODE   (1L<<0)
+#define CURLWS_NOAUTOPONG (1L<<1)
 
 CURL_EXTERN const struct curl_ws_frame *curl_ws_meta(CURL *curl);