Treeview multiselect is flakey

[alexr00]

Fixes #208802

[alexr00]

The rerender comes from here:

vscode/src/vs/workbench/browser/parts/views/treeView.ts

Lines 773 to 777 in fa74810

	this.treeDisposables.add(treeMenus.onDidChange((changed) => {
	if (this.tree?.hasNode(changed)) {
	this.tree?.rerender(changed);
	}
	}));

That event is fired when the menu that has the inline actions has it's context change, which is expected to happen during multiselect.