[OverlayController] _handleZIndex never executes - 'setup' phase is unused

[hyakt]

Expected behavior

The _handleZIndex method should set z-index to '1' for local overlays during initialization when the content node doesn't have an explicit z-index.
This ensures local overlays appear on top of elements with no z-index that appear later in the DOM.

Actual Behavior

The z-index logic never executes because _handleZIndex checks for phase === 'setup', but this phase is never used anywhere in the codebase.

Code reference:

lion/packages/ui/components/overlays/src/OverlayController.js

Lines 680 to 691 in eb8b7bd

	_handleZIndex({ phase }) {
	if (this.placementMode !== 'local') {
	return;
	}
	if (phase === 'setup') {
	const zIndexNumber = Number(getComputedStyle(this.contentNode).zIndex);
	if (zIndexNumber < 1 || Number.isNaN(zIndexNumber)) {
	this.contentNode.style.zIndex = '1';
	}
	}
	}

Suggested fix:
From if (phase === 'setup') to if (phase === 'init')

Additional context

This affects local overlays like tooltips when they don't have explicit z-index values set.

[SebayK]

i can take it