write-only storage buffer cannot match a Pipeline Layout

[cwfitzgerald]

Description

When you provide a storage buffer pipeline layout with read-only set to false, if the shader marks the buffer is write, it will complain about a mismatched PLL and shader.

[ERROR wgpu::backend::direct] Handling wgpu errors as fatal by default
    error matching shader requirements against the pipeline
    shader global ResourceBinding { group: 0, binding: 2 } is not available in the layout pipeline layout
    storage class Storage { access: LOAD | STORE } doesn't match the shader Storage { access: STORE }

[teoxoy]

Fixed by #3893