Rebase/upstream master 0.14

[Lowband21]

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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Batched primitives rendered after all other primitives

Batched custom primitives are skipped during the per-instance loop because BlackBox::draw returns true for batched types, but all batched work is only rendered later in a single call to render_layer_batches (see wgpu/src/lib.rs lines 716-720). This means any batched primitive is always drawn after every other primitive in the layer, regardless of its original order. When a batched primitive should appear behind or between other primitives (e.g., when some instances are not batchable and fall back to the normal path), their z-order is inverted and they will overdraw later items. The render order regression affects every layer that mixes batched and non-batched primitives.

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