CI : Welcoming new contributors CI is always skipped

[neeldoshii]

Description

It appears that the CI workflow responsible for welcoming new contributors is consistently being skipped. As a result, first-time contributors are not receiving the intended welcome message.

Expected Behavior

The workflow should trigger for first-time contributors and post a welcome message automatically.

Actual Behavior

The workflow is skipped, even when a new contributor opens their first PR.

• See this PR CI : Fixing the initialisation issues of categoryImagesCallback due to CategoryDetailsActivity, WikidataItemDetailsActivity not using reformed fragments #6747

Steps to Reproduce

1. Create a pull request from a first-time contributor account
2. Observe the CI workflow execution
3. Notice that the welcome workflow is skipped

[RitikaPahwa4444]

Linked it to continuous integration label as there are more such issues, will make it easier to track under one label.

[Roniscend]

@neeldoshii Just out of curiosity, how is contributor sign-off or verification handled in this project? I noticed there is no DCO check here