notebook css variables bleed to body

[TylerLeonhardt]

I noticed that there are a couple colors here that are available in body:

but the rest of the colors are available in the monaco workbench div:

these probably should be with the others.

possible code pointer:

vscode/src/vs/workbench/contrib/notebook/browser/notebookEditorWidget.ts

Lines 3131 to 3137 in 469ee93

	collector.addRule(`
	:root {
	--notebook-cell-status-icon-success: ${cellStatusIconSuccessColor};
	--notebook-cell-status-icon-error: ${cellStatusIconErrorColor};
	--notebook-cell-status-icon-running: ${cellStatusIconRunningColor};
	}
	`);