bug(material/tree): node added with insertNode remains visible after dataSource is updated

[GeorgianStan]

Is this a regression?

• Yes, this behavior used to work in the previous version

The previous version in which this bug was not present was

No response

Description

I'm using Material Tree and insertNode method to create a node inside the tree menu.

Reproduction

StackBlitz link
Steps to reproduce:

1. Open the app and focus inside the document
2. Press a to add a new node using insertNode method
3. Press r to restore the data to the initial state.

Expected Behavior

I expect that when the data object is populated, only the nodes passed in this array should be on the interface.

Actual Behavior

A ghost node is added.

Environment

@angular-devkit/architect       0.1703.7
@angular-devkit/build-angular   17.3.7
@angular-devkit/core            17.3.7
@angular-devkit/schematics      17.3.7
@angular/cli                    17.3.7
@schematics/angular             17.3.7
ng-packagr                      17.3.0
rxjs                            7.8.1
typescript                      5.4.5
webpack                         5.90.3
zone.js                         0.14.5

This is also in v18.