Assistant output cells do not run the correct cell initialization the first time they appear

[rhennigan]

Assistant output cells appear to be using the Initialization setting inherited from the ChatOutput style, which only adds the three-dot menu:

This is the menu that appears to get attached:

Chatbook/FrontEnd/StyleSheets/Chatbook.nb

Lines 2008 to 2022 in 2e01857

	AttachCell[
	cell$,
	Cell[
	BoxData[
	TemplateBox[
	{"ChatOutput", RGBColor[0.92549, 0.941176, 0.960784]},
	"ChatMenuButton"
	]
	],
	"ChatMenu"
	],
	{Right, Top},
	Offset[{-7, -7}, {Right, Top}],
	{Right, Top}
	]

It should be using the menu defined in the Initialization here, which also adds a button to disable assistance:

Chatbook/FrontEnd/StyleSheets/Chatbook.nb

Lines 2048 to 2107 in 2e01857

	AttachCell[
	cell$,
	Cell[
	BoxData[
	TagBox[
	GridBox[
	{
	{
	TagBox[
	TooltipBox[
	ButtonBox[
	TemplateBox[{}, "CloseAssistant"],
	ButtonFunction :>
	With[ { cell = EvaluationCell[] },
	Quiet[Needs["Wolfram`Chatbook`" -> None]];
	Catch[
	Symbol["Wolfram`Chatbook`ChatbookAction"][
	"DisableAssistance",
	cell
	],
	Blank[]
	]
	],
	Appearance ->
	Dynamic[
	FEPrivate`FrontEndResource[
	"FEExpressions",
	"SuppressMouseDownNinePatchAppearance"
	]
	],
	Evaluator -> Automatic,
	Method -> "Preemptive"
	],
	"\"Disable automatic assistance\"",
	TooltipStyle -> "TextStyling"
	],
	Annotation[#1, "Disable automatic assistance", "Tooltip"] &
	]
	},
	{
	TemplateBox[
	{"AssistantOutput", RGBColor[0.815686, 0.870588, 0.92549]},
	"ChatMenuButton"
	]
	}
	},
	GridBoxAlignment -> {"Columns" -> {{Left}}},
	DefaultBaseStyle -> "Column",
	GridBoxItemSize -> {"Columns" -> {{Automatic}}, "Rows" -> {{Automatic}}},
	GridBoxSpacings -> {"Columns" -> {{Automatic}}, "Rows" -> {{0}}}
	],
	"Column"
	]
	],
	"ChatMenu"
	],
	{Right, Top},
	Offset[{-7, -7}, {Right, Top}],
	{Right, Top}
	]

The correct initialization is used when cutting and pasting the cell, so there appears to be stylesheet bug somewhere.