don't re-expand SaR tree nodes if they are already expanded

[DenSinH]

Checklist

Before: opening a save and restore snapshot through a display builder OPEN_SAR_NODE action would (on first click) open the folders up to the snapshot's parent, but NOT the snapshot's parent itself. On second click, it would open the proper node. The issue was that both locateNode and the treeview event handler:

treeView.getRoot().addEventHandler(TreeItem.<Node>branchExpandedEvent(), e -> expandTreeNode(e.getTreeItem()));

called the expandTreeNode handler, which caused it to "expand" the parent folder twice, making it closed on the second call.

(Example trying to open acc/accelerator/oper)

After: this is fixed, now the node is opened right away.

• Testing:

The bug is no longer present

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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