[shaders] Enable CONTROL_FLOW_UNIFORMITY validation check

The shaders all now pass the control flow uniformity validation check,
so we don't need to keep it disabled.

crates/shaders/src/compile/mod.rs

@@ -48,7 +48,7 @@ impl ShaderInfo {
     pub fn new(source: String, entry_point: &str) -> Result<ShaderInfo, Error> {
         let module = wgsl::parse_str(&source)?;
         let module_info = naga::valid::Validator::new(
-            ValidationFlags::all() & !ValidationFlags::CONTROL_FLOW_UNIFORMITY,
+            ValidationFlags::all(),
             Capabilities::all(),
         )
         .validate(&module)?;