WIP: test dual_source_blending

Author: ErichDonGubler

cts_runner/test.lst

@@ -185,7 +185,7 @@ webgpu:shader,validation,expression,binary,short_circuiting_and_or:invalid_types
 webgpu:shader,validation,expression,binary,short_circuiting_and_or:scalar_vector:op="%26%26";lhs="bool";rhs="bool"
 webgpu:shader,validation,expression,call,builtin,all:arguments:test="ptr_deref"
 webgpu:shader,validation,expression,call,builtin,max:values:*
-webgpu:shader,validation,extension,dual_source_blending:blend_src_syntax_validation:*
+webgpu:shader,validation,extension,dual_source_blending:*
 webgpu:shader,validation,statement,statement_behavior:invalid_statements:body="break"
 webgpu:shader,validation,statement,statement_behavior:invalid_statements:body="break_if"
 webgpu:shader,validation,statement,statement_behavior:invalid_statements:body="continue"