Wrong filename when add EAD 2002 descriptive metadata

[hmiguim]

To further improve compatibility with RODA change the filename form ead2002.xml to ead_2002.xml

Example of a SIP:
[uuid-2c6e642f-9a42-4465-a56c-47dfac14ad6a.zip](https://github.com/user-attachments/files/22273141/uuid-2c6e642f-9a42-4465-
a56c-47dfac14ad6a.zip)

[dosubot]

Hi, @hmiguim. I'm Dosu (https://dosu.dev), and I'm helping the roda-in team manage their backlog and am marking this issue as stale.

Issue Summary:

• You requested renaming the EAD 2002 descriptive metadata file from "ead2002.xml" to "ead_2002.xml" to improve compatibility with RODA.
• You provided an example SIP file to demonstrate the change.
• There has been no further activity or comments on this issue since your initial request.
• The issue remains unresolved.

Next Steps:

• Please let me know if this issue is still relevant with the latest version of roda-in by commenting here.
• If I do not hear back within 7 days, this issue will be automatically closed.

Thank you for your understanding and contribution!