test(cts): add coverage for clip-distances feature

Author: ErichDonGubler

cts_runner/test.lst

@@ -56,6 +56,7 @@ webgpu:api,operation,vertex_state,correctness:setVertexBuffer_offset_and_attribu
 
 webgpu:api,validation,buffer,create:*
 webgpu:api,validation,buffer,destroy:*
+webgpu:api,validation,capability_checks,features,clip_distances:*
 webgpu:api,validation,capability_checks,limits,maxBindGroups:setBindGroup,*
 webgpu:api,validation,capability_checks,limits,maxBindingsPerBindGroup:validate,*
 webgpu:api,validation,capability_checks,limits,maxBufferSize:*
@@ -343,8 +344,8 @@ fails-if(dx12,vulkan) webgpu:shader,execution,shader_io,fragment_builtins:inputs
 webgpu:shader,execution,shader_io,fragment_builtins:primitive_index,*
 webgpu:shader,execution,shader_io,fragment_builtins:subgroup_invocation_id:*
 webgpu:shader,execution,shader_io,fragment_builtins:subgroup_size:*
+webgpu:shader,execution,shader_io,vertex_builtins:outputs,clip_distances:*
 webgpu:shader,execution,statement,compound:*
-
 webgpu:shader,validation,const_assert,const_assert:*
 webgpu:shader,validation,decl,assignment_statement:*
 webgpu:shader,validation,decl,compound_statement:*