Use test context in tests and new loop system in benchmarks (#33648)

Replace all contexts in tests with go1.24 t.Context()

---------

Co-authored-by: Giteabot <teabot@gitea.io>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

modules/markup/csv/csv_test.go

@@ -4,7 +4,6 @@
 package markup
 
 import (
-	"context"
 	"strings"
 	"testing"
 
@@ -24,7 +23,7 @@ func TestRenderCSV(t *testing.T) {
 
 	for k, v := range kases {
 		var buf strings.Builder
-		err := render.Render(markup.NewRenderContext(context.Background()), strings.NewReader(k), &buf)
+		err := render.Render(markup.NewRenderContext(t.Context()), strings.NewReader(k), &buf)
 		assert.NoError(t, err)
 		assert.EqualValues(t, v, buf.String())
 	}