Compat: Disallow textureSampleLevel/textureSampleCompareLevel with texture_depth_2d_array #4519

Disallow textureSampleLevel/textureSampleCompareLevel with texture_depth_2d_array since textureLod/textureLodOffset are missing in GLSL ES 3.1.

GL_EXT_texture_shadow_lod exists but looking at reports over on https://opengles.gpuinfo.org, very few GLSL ES 3.1 implementations support it.

There is also one workaround for supporting textureSampleLevel by translating it to textureGrad but the level passed must be 0.

For more context see: #4266 (comment) & #4513.