fix(actions): improve runner list status sorting, labels and task job links (#38586) (#38633)

Backport #38586 by @bircni

Several small fixes to the Actions runner management UI.

### Runner task list links to the job, not the workflow run
Relabeled the first column from "Run" to "Job"; it now shows the job ID
and links to the specific job (`/actions/runs/{runID}/jobs/{jobID}`).
Renamed locale key `task_list.run` to `task_list.job`.

### Missing "Disabled" translation
The runner list rendered a grey label via `actions.runners.disabled`,
but that key
did not exist in `locale_en-US.json`, so the raw key string leaked into
the UI.
Replaced `"actions.runners.disabled"` with `"disabled"`.

### Status column sorting ignored active vs idle
Sorting by status ordered purely on `last_online`, but the displayed
status is
computed from both `last_online` (offline) and `last_active` (idle vs
active).
As a result idle runners were interleaved with active ones. Sorting now
ranks by
the computed status (active → idle → offline). Disabled runners sink to
the bottom
of their status group (`is_disabled` as a secondary key), with
`last_online`/`id`
as stable tiebreakers so pagination stays deterministic.

### Status label colors
Active and idle both rendered green. Idle is now yellow, active green,
and
offline/unknown grey; the separate grey "Disabled" badge is unchanged.
This keeps
connectivity visible even for disabled runners (e.g. a disabled runner
still shows
whether it is idle or offline).

<img width="715" height="406" alt="image"
src="https://github.com/user-attachments/assets/9ef06aa8-a870-4de5-9d94-603a58186908"
/>

Co-authored-by: bircni <bircni@icloud.com>
Co-authored-by: Zettat123 <zettat123@gmail.com>

models/actions/task_test.go

@@ -9,6 +9,7 @@ import (
 
 	runnerv1 "gitea.dev/actions-proto-go/runner/v1"
 	"gitea.dev/models/db"
+	repo_model "gitea.dev/models/repo"
 	"gitea.dev/models/unittest"
 	"gitea.dev/modules/actions/jobparser"
 	"gitea.dev/modules/timeutil"
@@ -18,6 +19,21 @@ import (
 	"google.golang.org/protobuf/types/known/timestamppb"
 )
 
+func TestActionTask_GetRunJobLink(t *testing.T) {
+	repo := &repo_model.Repository{OwnerName: "org", Name: "consumer"}
+	run := &ActionRun{ID: 10, Repo: repo}
+	job := &ActionRunJob{ID: 42, Run: run}
+
+	// a task with a loaded job links to that specific job, not just the run
+	task := &ActionTask{Job: job}
+	assert.Equal(t, run.Link()+"/jobs/42", task.GetRunJobLink())
+
+	// missing job, run or repo yields an empty link instead of a broken URL
+	assert.Empty(t, (&ActionTask{}).GetRunJobLink())
+	assert.Empty(t, (&ActionTask{Job: &ActionRunJob{ID: 42}}).GetRunJobLink())
+	assert.Empty(t, (&ActionTask{Job: &ActionRunJob{ID: 42, Run: &ActionRun{ID: 10}}}).GetRunJobLink())
+}
+
 func TestMakeTaskStepDisplayName(t *testing.T) {
 	tests := []struct {
 		name     string