Fix possible panic in contacts fetch (#5205)

We were not checking for the error returned by the Get method before trying to use the result to get contact info.

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

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- [ ] 🕐 Yes, but in a later PR
- [x] ⛔ No

#### Type of change

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

#### Issue(s)

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#### Test Plan

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

src/pkg/services/m365/api/contacts.go

@@ -186,8 +186,11 @@ func (c Contacts) GetItem(
 		Contacts().
 		ByContactId(itemID).
 		Get(ctx, options)
+	if err != nil {
+		return nil, nil, clues.Stack(err)
+	}
 
-	return cont, ContactInfo(cont), clues.Stack(err).OrNil()
+	return cont, ContactInfo(cont), nil
 }
 
 func (c Contacts) PostItem(