Separate WAsm micro-kernels and scalar micro-kernels

- WAsm-specific microkernels explicitly use f32.min/f32.max WAsm instructions
- About 2% end-to-end improvement on x86, no change on ARM64

PiperOrigin-RevId: 283845483
diff --git a/test/f32-vmulcaddc.yaml b/test/f32-vmulcaddc.yaml
index a249a6a..93fa59c 100644
--- a/test/f32-vmulcaddc.yaml
+++ b/test/f32-vmulcaddc.yaml
@@ -10,6 +10,9 @@
 - name: xnn_f32_vmulcaddc_ukernel_c8__sse_2x
 - name: xnn_f32_vmulcaddc_ukernel_c4__psimd_2x
 - name: xnn_f32_vmulcaddc_ukernel_c8__psimd_2x
+- name: xnn_f32_vmulcaddc_ukernel_c1__wasm_2x
+- name: xnn_f32_vmulcaddc_ukernel_c2__wasm_2x
+- name: xnn_f32_vmulcaddc_ukernel_c4__wasm_2x
 - name: xnn_f32_vmulcaddc_ukernel_c1__scalar_2x
 - name: xnn_f32_vmulcaddc_ukernel_c2__scalar_2x
 - name: xnn_f32_vmulcaddc_ukernel_c4__scalar_2x