Make order insensitive permission compare (#2448)

## Description

Update the comparison for OneDrive permissions so it doesn't assume a fixed order. Also fix index out of bounds errors if backup did not retrieve the expected permissions

## 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] 🤖 Test
- [ ] 💻 CI/Deployment
- [ ] 🧹 Tech Debt/Cleanup

## Issue(s)

* #2447 

## Test Plan

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

src/internal/connector/graph_connector_helper_test.go

@@ -14,6 +14,7 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"golang.org/x/exp/maps"
+	"golang.org/x/exp/slices"
 
 	"github.com/alcionai/corso/src/internal/connector/mockconnector"
 	"github.com/alcionai/corso/src/internal/connector/onedrive"
@@ -652,6 +653,35 @@ func compareExchangeEvent(
 	checkEvent(t, expectedEvent, itemEvent)
 }
 
+func permissionEqual(expected onedrive.UserPermission, got onedrive.UserPermission) bool {
+	if !strings.EqualFold(expected.Email, got.Email) {
+		return false
+	}
+
+	if (expected.Expiration == nil && got.Expiration != nil) ||
+		(expected.Expiration != nil && got.Expiration == nil) {
+		return false
+	}
+
+	if expected.Expiration != nil &&
+		got.Expiration != nil &&
+		!expected.Expiration.Equal(*got.Expiration) {
+		return false
+	}
+
+	if len(expected.Roles) != len(got.Roles) {
+		return false
+	}
+
+	for _, r := range got.Roles {
+		if !slices.Contains(expected.Roles, r) {
+			return false
+		}
+	}
+
+	return true
+}
+
 func compareOneDriveItem(
 	t *testing.T,
 	expected map[string][]byte,
@@ -695,13 +725,7 @@ func compareOneDriveItem(
 	}
 
 	assert.Equal(t, len(expectedMeta.Permissions), len(itemMeta.Permissions), "number of permissions after restore")
-
-	// FIXME(meain): The permissions before and after might not be in the same order.
-	for i, p := range expectedMeta.Permissions {
-		assert.Equal(t, strings.ToLower(p.Email), strings.ToLower(itemMeta.Permissions[i].Email))
-		assert.Equal(t, p.Roles, itemMeta.Permissions[i].Roles)
-		assert.Equal(t, p.Expiration, itemMeta.Permissions[i].Expiration)
-	}
+	testElementsMatch(t, expectedMeta.Permissions, itemMeta.Permissions, permissionEqual)
 }
 
 func compareItem(