fix(gles): Only use sampler2DShadow if comparison samplers are used#8301

DerSchmale wants to merge 5 commits intogfx-rs:trunkgfx-rs/wgpu:trunkfrom

DerSchmale:fix/gles-depth-texture-no-comparisonDerSchmale/wgpu:fix/gles-depth-texture-no-comparisonCopy head branch name to clipboard