php#53: Fix SSL client-server test certificate and handshake issues

       - Replace corrupted base64 certificate with valid RSA 2048-bit cert
       - Use temporary files instead of data:// URIs for Windows OpenSSL compatibility
       - Add explicit TLS crypto methods for server and client contexts
       - Fix client SSL connection by adding ssl:// prefix to server address
       - Add proper cleanup of temporary certificate files

Author: EdmondDantes

ext/openssl/xp_ssl.c

@@ -2271,6 +2271,8 @@ static inline int php_openssl_tcp_sockop_accept(php_stream *stream, php_openssl_
 		memcpy(clisockdata, sock, sizeof(clisockdata->s));
 
 		clisockdata->s.socket = clisock;
+		clisockdata->s.poll_event = NULL;
+		clisockdata->s.nonblocking_applied = false;
 #ifdef __linux__
 		/* O_NONBLOCK is not inherited on Linux */
 		clisockdata->s.is_blocked = true;