fix: consume SpellCastTargets bytes after miss list in Classic/TBC SpellGo

Added skipClassicSpellCastTargets() and skipTbcSpellCastTargets() calls
in parseSpellGo() for both expansions, matching the same fix applied to
WotLK SpellGoParser and both SpellStartParsers. Prevents packet stream
misalignment for ground-targeted and AoE spells (Blizzard, Rain of
Fire, Flamestrike, etc.) where the server appends DEST_LOCATION or
other target fields after the hit/miss lists.

src/game/packet_parsers_classic.cpp

@@ -762,6 +762,10 @@ bool ClassicPacketParsers::parseSpellGo(network::Packet& packet, SpellGoData& da
         return false;
     }
 
+    // SpellCastTargets follows the miss list — consume all target bytes so that
+    // any subsequent fields (e.g. castFlags extras) are not misaligned.
+    skipClassicSpellCastTargets(packet, &data.targetGuid);
+
     LOG_DEBUG("[Classic] Spell go: spell=", data.spellId, " hits=", (int)data.hitCount,
               " misses=", (int)data.missCount);
     return true;

src/game/packet_parsers_tbc.cpp

@@ -1423,6 +1423,10 @@ bool TbcPacketParsers::parseSpellGo(network::Packet& packet, SpellGoData& data)
     }
     data.missCount = static_cast<uint8_t>(data.missTargets.size());
 
+    // SpellCastTargets follows the miss list — consume all target bytes so that
+    // any subsequent fields are not misaligned for ground-targeted AoE spells.
+    skipTbcSpellCastTargets(packet, &data.targetGuid);
+
     LOG_DEBUG("[TBC] Spell go: spell=", data.spellId, " hits=", (int)data.hitCount,
               " misses=", (int)data.missCount);
     return true;