Add logging like in exchange backup path (#4710)

Log both the given limits and the effective limits so we can figure out if something went wrong.

---

#### Does this PR need a docs update or release note?

- [ ] ✅ Yes, it's included
- [ ] 🕐 Yes, but in a later PR
- [x] ⛔ No

#### Type of change

- [ ] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [x] 🤖 Supportability/Tests
- [ ] 💻 CI/Deployment
- [ ] 🧹 Tech Debt/Cleanup

#### Test Plan

- [x] 💪 Manual
- [ ] ⚡ Unit test
- [ ] 💚 E2E

src/internal/m365/collection/drive/collections.go

@@ -787,6 +787,10 @@ type pagerLimiter struct {
 	limits control.PreviewItemLimits
 }
 
+func (l pagerLimiter) effectiveLimits() control.PreviewItemLimits {
+	return l.limits
+}
+
 func (l pagerLimiter) enabled() bool {
 	return l.limits.Enabled
 }
@@ -863,7 +867,10 @@ func (c *Collections) PopulateDriveCollections(
 	)
 
 	ctx = clues.Add(ctx, "invalid_prev_delta", invalidPrevDelta)
-	logger.Ctx(ctx).Infow("running backup with limiter", "limiter", limiter)
+	logger.Ctx(ctx).Infow(
+		"running backup",
+		"limits", c.ctrl.PreviewLimits,
+		"effective_limits", limiter.effectiveLimits())
 
 	if !invalidPrevDelta {
 		maps.Copy(newPrevPaths, oldPrevPaths)