Truncate device name at UTF-8 code point boundary

Just in case.

server/src/main/java/com/genymobile/scrcpy/DesktopConnection.java

@@ -89,7 +89,7 @@ public final class DesktopConnection implements Closeable {
         byte[] buffer = new byte[DEVICE_NAME_FIELD_LENGTH + 4];
 
         byte[] deviceNameBytes = deviceName.getBytes(StandardCharsets.UTF_8);
-        int len = Math.min(DEVICE_NAME_FIELD_LENGTH - 1, deviceNameBytes.length);
+        int len = StringUtils.getUtf8TruncationIndex(deviceNameBytes, DEVICE_NAME_FIELD_LENGTH - 1);
         System.arraycopy(deviceNameBytes, 0, buffer, 0, len);
         // byte[] are always 0-initialized in java, no need to set '\0' explicitly