Fix buffer_view validation tests (#4686)

* bufferView and bufferArrayView tests had invalid checks for the
  parameter type tests (copypasta)

Author: alan-baker

src/webgpu/shader/validation/expression/call/builtin/bufferArrayView.spec.ts

@@ -135,11 +135,9 @@ g.test('offset_type')
   .desc('Validates the offset parameter type')
   .params(u => u.combine('type', keysOf(kTypes)))
   .fn(t => {
+    t.skipIfLanguageFeatureNotSupported('buffer_view');
     const type = kTypes[t.params.type];
-    let enables = `enable subgroups;\n`;
-    if (type.requiresF16()) {
-      enables += `enable f16;`;
-    }
+    const enables = type.requiresF16() ? 'enable f16;' : '';
     const wgsl = `
 ${enables}
 @group(0) @binding(0) var<storage> v : buffer;
@@ -158,11 +156,9 @@ g.test('size_type')
   .desc('Validates the offset parameter type')
   .params(u => u.combine('type', keysOf(kTypes)))
   .fn(t => {
+    t.skipIfLanguageFeatureNotSupported('buffer_view');
     const type = kTypes[t.params.type];
-    let enables = `enable subgroups;\n`;
-    if (type.requiresF16()) {
-      enables += `enable f16;`;
-    }
+    const enables = type.requiresF16() ? 'enable f16;' : '';
     const wgsl = `
 ${enables}
 @group(0) @binding(0) var<storage> v : buffer;

src/webgpu/shader/validation/expression/call/builtin/bufferView.spec.ts

@@ -129,11 +129,9 @@ g.test('offset_type')
   .desc('Validates the offset parameter type')
   .params(u => u.combine('type', keysOf(kTypes)))
   .fn(t => {
+    t.skipIfLanguageFeatureNotSupported('buffer_view');
     const type = kTypes[t.params.type];
-    let enables = `enable subgroups;\n`;
-    if (type.requiresF16()) {
-      enables += `enable f16;`;
-    }
+    const enables = type.requiresF16() ? 'enable f16;' : '';
     const wgsl = `
 ${enables}
 @group(0) @binding(0) var<storage> v : buffer;