Compilation broken with dearimgui 1.89.7

ItemHoverable got a flag parameter: - 2023/06/28 (1.89.7) - overlapping items: IsItemHovered() now by default return false when querying an item using AllowOverlap mode which is being overlapped. Use ImGuiHoveredFlags_AllowWhenOverlappedByItem to revert to old behavior.

// (this does not rely on LastItemData it can be called from a ButtonBehavior() call not following an ItemAdd() call)
// FIXME-LEGACY: the 'ImGuiItemFlags item_flags' parameter was added on 2023-06-28.
// If you used this ii your legacy/custom widgets code:
// - Commonly: if your ItemHoverable() call comes after an ItemAdd() call: pass 'item_flags = g.LastItemData.InFlags'.
// - Rare: otherwise you may pass 'item_flags = 0' (ImGuiItemFlags_None) unless you want to benefit from special behavior handled by ItemHoverable.