fix: use quartz clock in task status test (#22969)

Replace time.Since() usage with a quartz.Clock injected via RootCmd to
ensure relative time strings ("Xs ago") are deterministic.

cli/clitest/clitest.go

@@ -24,6 +24,7 @@ import (
 	"github.com/coder/coder/v2/codersdk"
 	"github.com/coder/coder/v2/provisioner/echo"
 	"github.com/coder/coder/v2/testutil"
+	"github.com/coder/quartz"
 	"github.com/coder/serpent"
 )
 
@@ -40,6 +41,18 @@ func New(t testing.TB, args ...string) (*serpent.Invocation, config.Root) {
 	return NewWithCommand(t, cmd, args...)
 }
 
+// NewWithClock is like New, but injects the given clock for
+// tests that are time-dependent.
+func NewWithClock(t testing.TB, clk quartz.Clock, args ...string) (*serpent.Invocation, config.Root) {
+	var root cli.RootCmd
+	root.SetClock(clk)
+
+	cmd, err := root.Command(root.AGPL())
+	require.NoError(t, err)
+
+	return NewWithCommand(t, cmd, args...)
+}
+
 type logWriter struct {
 	prefix string
 	log    slog.Logger