fix(front): follow pagination when preloading workflow pipelines (#384)

When preloading the pipelines for the workflow, we are not following the
pagination, so for workflows with more pipelines than 300, which is
rare, we don't get all of them, which can lead to 500s in the branch and
workflow pages, due to
FrontWeb.PipelineView.TreeLike.find_top_pipeline/1 returning nil.

Author: lucaspin

front/lib/front/models/workflow.ex

@@ -431,7 +431,8 @@ defmodule Front.Models.Workflow do
 
   def preload_pipelines(workflows) when is_list(workflows) do
     Front.Utils.parallel_map(workflows, fn workflow ->
-      pipelines = Front.Models.Pipeline.list(wf_id: workflow.id)
+      options = [pagination: :auto]
+      pipelines = Front.Models.Pipeline.list([wf_id: workflow.id], options)
 
       %{workflow | pipelines: pipelines}
     end)