lisa.datautils: Fix df_filter_task_ids() empty task_ids
Created by: vdonnefort
Currently the case where task_ids is empty were not handled. This can happen since the introduction of:
(54d06394 lisa.tests.base: ignore all threaded IRQs)
GitLab Maintenance scheduled for Thursday, 18th December 2025, from 7:00 AM to 10:00 AM BST. GitLab will be in read-only mode and experience short periods of complete downtime (up to 20 minutes) during this window.
Created by: vdonnefort
Currently the case where task_ids is empty were not handled. This can happen since the introduction of:
(54d06394 lisa.tests.base: ignore all threaded IRQs)