Enable more revive linter rules (#30608)

Noteable additions:

- `redefines-builtin-id` forbid variable names that shadow go builtins
- `empty-lines` remove unnecessary empty lines that `gofumpt` does not
remove for some reason
- `superfluous-else` eliminate more superfluous `else` branches

Rules are also sorted alphabetically and I cleaned up various parts of
`.golangci.yml`.

(cherry picked from commit 74f0c84fa4245a20ce6fb87dac1faf2aeeded2a2)

Conflicts:
	.golangci.yml
	apply the linter recommendations to Forgejo code as well

services/actions/notifier_helper.go

@@ -329,13 +329,15 @@ func handleWorkflows(
 			TriggerEvent:      dwf.TriggerEvent.Name,
 			Status:            actions_model.StatusWaiting,
 		}
-		if need, err := ifNeedApproval(ctx, run, input.Repo, input.Doer); err != nil {
+
+		need, err := ifNeedApproval(ctx, run, input.Repo, input.Doer)
+		if err != nil {
 			log.Error("check if need approval for repo %d with user %d: %v", input.Repo.ID, input.Doer.ID, err)
 			continue
-		} else {
-			run.NeedApproval = need
 		}
 
+		run.NeedApproval = need
+
 		if err := run.LoadAttributes(ctx); err != nil {
 			log.Error("LoadAttributes: %v", err)
 			continue