feat: expand bundle-backed PartListItems inline in the tree

[rubenartus]

No description provided.

[Copilot]

Pull request overview

Expands the Item Explorer tree behavior so that Part List items that are actually backed by a Product Bundle can be expanded inline (showing bundle contents), and ensures toolbar actions apply to these bundle-typed nodes.

Changes:

• Treat Part List children as regular items by running them through set_expandable() (allowing bundle-backed items to become expandable and typed as Product Bundle).
• Remove manual type assignment for Part List items and rely on set_expandable() to set type/expandable.
• Allow Product Bundle-typed nodes to use existing tree toolbar actions (Copy / Open Item).

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
item_explorer/item_explorer/doctype/item_explorer/item_explorer_tree.js	Adds Product Bundle to toolbar action eligibility checks so bundle-typed nodes can be copied/opened like other item nodes.
item_explorer/item_explorer/doctype/item_explorer/item_explorer.py	Updates Part List item generation to call set_expandable() so bundle-backed Part List items can be expanded inline (and ensures type is set before add_value_json_field).

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[Namekkural]

Sieht gut aus, hast du es lokal getestet? Das sollte man auf jeden Fall einmal machen.

[rubenartus]

Nee, hab ERPNext local noch nicht aufgesetzt, hatte geplant es mit dem App-Branch-Feature in Frappe-Cloud zu testen. Haben wir da ein Repo/eine Anleitung für's lokale Setup von ERP mit Live-Daten?

[Namekkural]

Phil hat das zuletzt mal gut hinbekommen, kannst es aber auch gern auf erp-test ausprobieren. Fürs integrieren ist lokal besser