Umbraco Forms: 10.5.0-rc1 new issue with dropdown mandatory

[troshan]

Dropdown mandatory validation message not showing under validation summary

Reproduction

Install Umbraco Forms: 10.5.0-rc1
Create a Dropdown field EX: countries and add few items
Make it mandatory
Enable validation summary

Now submit the form without selecting any items.
Validation summary is not picking the error

Bug summary

Dropdown mandatory validation message not showing under validation summary

Specifics

Steps to reproduce

Expected result

Dropdown mandatory error validation message should be visible at validation summary

Actual result

Other error messages are showing but not showing drop-down field error message at validation summary

[AndyButland]

Thanks for the report. It looks like this has been caused due to a change in the client library we use for validation... which comes from a PR from me to resolve #1053.

Fortunately it looks like someone has stepped in a fixed the regression I caused with that update.

I can replicate the issue with 10.5.0-rc1, and if I update to what is now the latest version of aspnet-client-validation, can also see this resolves the issue. So we'll reference the latest in the final release for 10.5 and 12.1.