Steps to replicate the issue (include links if applicable):

• Select two files for upload
• In the Describe page, enter the same name in Title field for both files
• Click on Publish files

What happens?:
The error message says "There is one error with the forms above. Correct the error, and try submitting again." but doesn't tell the user what the error is about.

What should have happened instead?:

This should ideally say the files names are same and ask the user to change the names or agree to have a unique number appended at the end of file name (used to happen by default if I'm not wrong?)

Software version (on Special:Version page; skip for WMF-hosted wikis like Wikipedia):

Other information (browser name/version, screenshots, etc.):

Firefox 125.0.