Extra test for some recursive delete behavior (#2478)

## Description

Folders replaced after a delete should not have their subfolders reparented to the new folder.

## 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

## Test Plan

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

src/internal/kopia/upload_test.go

@@ -1739,6 +1739,40 @@ func (suite *HierarchyBuilderUnitSuite) TestBuildDirectoryTreeMultipleSubdirecto
 				},
 			),
 		},
+		{
+			name: "ReplaceDeletedSubtreeWithNew",
+			inputCollections: func(t *testing.T) []data.BackupCollection {
+				oldInbox := mockconnector.NewMockExchangeCollection(inboxStorePath, inboxLocPath, 0)
+				oldInbox.PrevPath = inboxStorePath
+				oldInbox.ColState = data.DeletedState
+
+				newCol := mockconnector.NewMockExchangeCollection(inboxStorePath, inboxLocPath, 1)
+				newCol.ColState = data.NewState
+				newCol.Names[0] = workFileName2
+				newCol.Data[0] = workFileData2
+
+				return []data.BackupCollection{oldInbox, newCol}
+			},
+			expected: expectedTreeWithChildren(
+				[]string{
+					testTenant,
+					service,
+					testUser,
+					category,
+				},
+				[]*expectedNode{
+					{
+						name: testInboxID,
+						children: []*expectedNode{
+							{
+								name: workFileName2,
+								data: workFileData2,
+							},
+						},
+					},
+				},
+			),
+		},
 		{
 			name: "ReplaceMovedDirectory",
 			inputCollections: func(t *testing.T) []data.BackupCollection {