fix(zone): lengths and counts in zone files are checked against what is left of the file

A string length, the path chunk's length and an object's render technique count are
compared with the bytes left before memory is set aside for them. The terrain reader
is built into dCommon, so every server that reads zone files has it.

Co-Authored-By: Claude Fable 5.2 <noreply@anthropic.com>

dCommon/ZoneFile.cpp

@@ -64,6 +64,7 @@ void ZoneFile::Read(std::istream& file) {
 	if (fileFormatVersion >= FileFormatVersion::EarlyAlpha) {
 		// The paths are a chunk of their own (LuzFile::ReadLUZFile copies it, ReadLUZPaths reads it)
 		BinaryIO::BinaryRead(file, pathDataLength);
+		BinaryIO::RequireRemaining(file, pathDataLength);
 		std::string chunk(pathDataLength, '\0');
 		file.read(chunk.data(), static_cast<std::streamsize>(chunk.size()));
 		if (!file) throw std::runtime_error("Failed to read from istream.");