See: b/336270922

Currently Modifier.drawWithCache queries the current density and layout direction from DelegatableNode#requireDensity and DelegatableNode#requireLayoutDirection. However, LayoutNode currently does not broadcast changes back to the modifier chain whenever the density or layout direction change. That leads to issues where Modifier.drawWithCache does not update based on the latest density/layout direction that was available.

There is already prior art that special cases PointerInput modifiers to receive updates to density/layoutdirection changes and the fix for b/336270922 does the same for Modifier.drawWithCache. This is because at the time b/336270922 was addressed, API changes to add APIs to DelegatableNode are disallowed. So introduce a stopgap solution to fix the bug now and introduce a more holistic solution going forward.

Discussions with the wider team in the Modifier task force group lead to consensus that introducing DelegateableNode#onLayoutDirectionChanged and DelegatabelNode#onDensityChanged would be a preferable longer term solution. See: https://chat.google.com/room/AAAAbSAVMlo/m_-HpV0vl1o