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[Bug Report][3.5.9] Treeview: when setting the opened prop, it gets reset to an empty array #19414

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@JeppeKnockaert

Description

Environment

Vuetify Version: 3.5.9
Vue Version: 3.4.21
Browsers: Safari 17.4
OS: Mac OS 10.15.7

Steps to reproduce

Set the opened prop directly in the template, or using data

Expected Behavior

The tree opens

Actual Behavior

The tree remains closed

Reproduction Link

https://play.vuetifyjs.com/#...

Other comments

It does work if setting the opened after mounting the tree-view, by setting the opened prop in the mounted hook, but you can't pass it directly.

I think it might be because of the watcher on openAll: https://github.com/vuetifyjs/vuetify/blob/master/packages/vuetify/src/labs/VTreeview/VTreeview.tsx#L107

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C: VTreeviewVTreeviewT: bugFunctionality that does not work as intended/expected

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