PRs brake Azure Devops PR Description 4000 characters limit

[almir-gl]

We are currently facing an issue where PR is over 4000 characters, because Azure DevOps has limit of number of characters on PR Description.

This is error message:
"Invalid argument value.\r\nParameter name: A description for a pull request must not be longer than 4000 characters."

This is a thread where increase of limit was requested to Microsoft, but still not implemented:
https://developercommunity.visualstudio.com/t/raise-the-character-limit-for-pull-request-descrip/365708

[fthomas]

Looks like we need something like #3492 where the maximum length depends on the selected forge.

[fthomas]

The limit for Bitbucket Server seems to be 32768: https://jira.atlassian.com/browse/BSERV-14135