Display workflow link in queue only on assigned tasks

[xoxys]

Fixes: #5516 (comment)

[anbraten]

Not sure if this fix is ideal. The pipeline is known as soon as we create it from the webhook call. I think the issue is coming from

woodpecker/server/api/hook.go

Lines 127 to 129 in 32a7084

	if task.AgentID == 0 {
	result = append(result, taskResponse)
	continue

skipping the pipeline number assignment in case there was no agent

woodpecker/server/api/hook.go

Line 144 in 32a7084

taskResponse.PipelineNumber = p.Number

Instead it should only skip the pipeline number assignment in case of task.PipelineID being 0, but that should actually never be the case.

@xoxys

[xoxys]

Fair point, Ill take another look 👍