variable CI_PIPELINE_DEPLOY_TASK is empty in woodpecker

[lara-clink]

Component

other

Describe the bug

I am testing version 2.6 in my development environment, so I updated an application code to use
- evaluate: CI_PIPELINE_DEPLOY_TASK == "sre-dummy-rest-app"
instead of the 'task:' filter.
In my github hooks payload I get:

But the CI_PIPELINE_DEPLOY_TASK is empty and woodpecker is not running the steps that it should run.

Steps to reproduce

Using :

when:
      - evaluate: CI_PIPELINE_DEPLOY_TASK == "value" 

Instead of:
task: "value"

Expected behavior

Run with the variable as it should run with the filter in previous versions.

System Info

{"source":"https://github.com/woodpecker-ci/woodpecker","version":"2.6.0"}

Additional context

No response

Validations

• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Checked that the bug isn't fixed in the next version already [https://woodpecker-ci.org/faq#which-version-of-woodpecker-should-i-use]

[zc-devs]

it should run with the filter in previous versions

Has it ever been?

Constraints doesn't contain task filter and seems has never been.