Ariadne's unconditional 10 second TFTP period not working?

# Issue Template
unconditional TFTP upload after any reset not possible anymore?

## Prerequisites
Mega 2560 with W5500 Shield 2

Please answer the following questions for yourself before submitting an issue. **YOU MAY DELETE THE PREREQUISITES SECTION.**

- [x ] I am running the latest version
- [ x] I checked the documentation and found no answer
- [x ] I checked to make sure that this issue has not already been filed
- [ x] I'm reporting the issue to the correct repository (for multi-repository projects)

## Context
Plain Mega 2560 flashed with Athena, plus Ethernet Shield 2 (W5500) on top, works with "manual" EEPROM.enableUpdateMode() and with AthenaEthernetReset, but not without those (Ariadne did)

* Firmware Version: Mega 2560 flashed to Athena
* Operating System: any
* SDK version: any (1.8.1 to newest 2.x)
* Toolchain version:

## Expected Behavior
Ariadne would wait 10 seconds after any reset/repower/WD for a TFTP update, without prerequsites (except network settings of course).

## Current Behavior
Athena seems to need some EEPROM flags set prior to be able to TFTP after any reset/repower/WD
Contrary to Ariadne in the manual mode it never times out _ This mode will not time out_
[https://github.com/embeddedartistry/athena-bootloader?tab=readme-ov-file#reprogramming-without-the-reset-server-library](https://github.com/embeddedartistry/athena-bootloader?tab=readme-ov-file#reprogramming-without-the-reset-server-library)

## Failure Information (for bugs)
no response during 10 seconds

### Steps to Reproduce
1) Fash Athena bootloader,
2) setup with network settings with WriteNetworkSettings
3) reset
4) TFTP
Athena waits for 10 seconds but any TFTP uptade fails.

Thanks!