fix(parsing): bail on suspicious maskBlockCount in CREATE_OBJECT blocks

When spline parsing consumes the wrong number of bytes, the subsequent
blockCount read lands on garbage data (e.g. 71 instead of ~5 for UNIT).
Previously the parser logged a warning but continued, reading garbage
mask/field data until hitting truncation. Now it returns false for
CREATE_OBJECT blocks with suspicious counts, letting the block loop
skip cleanly to the next entity.

Also downgrade ~44 diagnostic LOG_WARNING messages to LOG_DEBUG across
17 files (equipment, transport, DBC, heartbeat, chat, GO raypick, etc.)
to reduce log noise and make real warnings visible.

src/core/entity_spawn_callback_handler.cpp

@@ -41,7 +41,7 @@ void EntitySpawnCallbackHandler::setupCallbacks() {
                                               uint32_t appearanceBytes,
                                               uint8_t facialFeatures,
                                               float x, float y, float z, float orientation) {
-        LOG_WARNING("playerSpawnCallback: guid=0x", std::hex, guid, std::dec,
+        LOG_DEBUG("playerSpawnCallback: guid=0x", std::hex, guid, std::dec,
                     " race=", static_cast<int>(raceId), " gender=", static_cast<int>(genderId),
                     " pos=(", x, ",", y, ",", z, ")");
         // Skip local player — already spawned as the main character