[Wireshark plugin] - JA4S_c not parsing enough extensions

[sgalac]

Example, yes this a misconfigured server:

TLSv1.2 Record Layer: Handshake Protocol: Server Hello
    Content Type: Handshake (22)
    Version: TLS 1.2 (0x0303)
    Length: 94
    Handshake Protocol: Server Hello
        Handshake Type: Server Hello (2)
        Length: 90
        Version: TLS 1.2 (0x0303)
        Random: 67c708671cfdb380302492584cd3e7922d3a4e26744e779b444f574e47524401
        Session ID Length: 32
        Session ID: 3175b5627a01302c2b7f87388a997fb74c0646d5d47ef1154978cf39c2087677
        Cipher Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 (0xcca8)
        Compression Method: null (0)
        Extensions Length: 18
        Extension: server_name (len=0)
            Type: server_name (0)
            Length: 0
        Extension: renegotiation_info (len=1)
            Type: renegotiation_info (65281)
            Length: 1
            Renegotiation Info extension
        Extension: application_layer_protocol_negotiation (len=5)
            Type: application_layer_protocol_negotiation (16)
            Length: 5
            ALPN Extension Length: 3
            ALPN Protocol
        [JA3S Fullstring: 771,52392,0-65281-16]
        [JA3S: c5baba5035a73677f54864d93349f451]

The JA4S fingerprint obtained is:

JA4 Fingerprint
    JA4S: t1203h3_cca8_bc98f8e001b5
    JA4S Raw: t1203h3_cca8_ff01
   

This is incorrect. The JA4S_c should be 0000_ff01_0010 - server name, reneg. info, ALPN
The number of extensions is correctly calculated.

Tested on Wireshark and the latest JA4 plugin (ja4-wireshark-plugins-2025.02.15.40)

Version 4.4.5 (v4.4.5-0-g47253bcf3773).

Compiled (64-bit) using Microsoft Visual Studio 2022 (VC++ 14.41, build 34123),
with GLib 2.78.4, with Qt 6.5.3, with libpcap, with zlib 1.3.1, with zlib-ng
2.1.5, with PCRE2, with Lua 5.4.6 (with UfW patches), with GnuTLS 3.8.4 and PKCS
#11 support, with Gcrypt 1.10.2-unknown, with Kerberos (MIT), with MaxMind, with
nghttp2 1.62.1, with nghttp3 0.14.0, with brotli, with LZ4, with Zstandard, with
Snappy, with libxml2 2.11.7, with libsmi 0.5.0, with Minizip-ng , with
QtMultimedia, with automatic updates using WinSparkle 0.8.0, with AirPcap, with
binary plugins.