How to enforce `maxImageRectWidth`, especially for non-projection layers?

1. `XrViewConfigurationView` specifies `maxImageRectWidth` and `maxImageRectHeight` but no enforcement is explicitly specified. Should the runtime return `XR_ERROR_SWAPCHAIN_RECT_INVALID` if the application specifies a `XrSwapchainSubImage` that is larger than these limits?

2. It seems that `maxImageRectWidth` and `maxImageRectHeight` only apply to `XrCompositionLayerProjection`. Would it be possible to have some way for the runtime to limit the subimage extent for other layer types, such as `XrCompositionLayerQuad`? Or will the only mechanism for this be to limit the maximum extent of the entire swapchain image via `XrSystemGraphicsProperties.maxSwapchainImageWidth` and `Height`?

Start by reading the specification entries for XrViewConfigurationView, XrSwapchainSubImage, XrCompositionLayerProjection, XrCompositionLayerQuad, and XrSystemGraphicsProperties. Compare their stated limits with the definition of XR_ERROR_SWAPCHAIN_RECT_INVALID. Done means the specification clearly resolves enforcement for projection and non-projection layers.

Written by the indexing model from the issue text.