Add support for passing objects reference for all ListLike Panel layouts that do not support it yet, to achieve consistent behaviour for all ListLike layouts

[Coderambling]

Reference to earlier issue for Flexbox layout: #6387

@philippjfr , as discussed. The remaining Listlike layouts that do not support it yet are:

Accordion (did not test that one). Update: tested it, Accordion does not support this.
FloatPanel
WidgetBox
Tabs
Is Card also ListLike?

Reference and text of the Discord message below:

Discord channel: https://discord.com/channels/1075331058024861767/1088157184489164831

Looking throught the API reference now for the ListLike layouts. Column, Row, and FlexBox now accept objects. So that leaves FloatPanel, WidgetBox and Tabs as the other ListLike layouts?

Update: Tested it: FloatPanel gives same error as Flexbox did before. WidgetBox supports objects=

Tabs gives error: TypeError: 'List' object is not iterable with pn.Tab(objects=widgetlist.param.value). Tab(objects=widgetlist.value) works.

[Coderambling]

For reference: PR for the other layouts with the same issue is here #6389

[Coderambling]

Update: when testing, this seems to work for Card.