Fix div-by-0 partial eval tests (#3873)

According to the spec, division by zero is invalid even if only the rhs
can be constant evaluated for integral types. However, for FP types, it
is only an error if the whole expression can be const-evaled.

src/webgpu/shader/validation/expression/binary/div_rem.spec.ts

@@ -142,10 +142,14 @@ g.test('scalar_vector_out_of_range')
         return p.nonOneIndex === 0;
       })
       .expandWithParams(p => {
+        // When lhs is a non-const expression, division by zero is only an error for integral types.
+        const partialDivByZeroIsError = [Type.i32, Type.u32].includes(
+          scalarTypeOf(kScalarAndVectorTypes[p.rhs])
+        );
         const cases = [
           { leftValue: 42, rightValue: 0, error: true, leftRuntime: false },
-          { leftValue: 42, rightValue: 0, error: true, leftRuntime: true },
-          { leftValue: 0, rightValue: 0, error: true, leftRuntime: true },
+          { leftValue: 42, rightValue: 0, error: partialDivByZeroIsError, leftRuntime: true },
+          { leftValue: 0, rightValue: 0, error: partialDivByZeroIsError, leftRuntime: true },
           { leftValue: 0, rightValue: 42, error: false, leftRuntime: false },
         ];
         if (p.lhs === 'i32') {