The depth clear value is ignored in `GlCommandEncoder.createRenderPass()`

When a RenderPassDescriptor provides a depth clear value, createRenderPass() sets _depthMask(true) and adds 256 to clearMask, but never actually issues the clear. The correct call, GlStateManager._clearBuffer(clearValue.getAsDouble()), exists elsewhere in the codebase (clearDepthTexture() uses it correctly) but is simply missing here. The clearMask variable is only used to conditionally set up the scissor state for the render pass, never passed to any GL clear function. Any mod or future vanilla code passing a non-empty depth clear value via createRenderPass() will silently get no clear at all, leading to depth buffer artifacts and incorrect occlusion. The fix is a single missing call to GlStateManager._clearBuffer(clearValue.getAsDouble()) inside the if (clearValue.isPresent()) block here https://mcsrc.dev/1/26.2-pre-1/com/mojang/blaze3d/opengl/GlCommandEncoder#L175 .