test(@angular-devkit/build-angular): skip Tailwind CSS E2E in Node.js 10

Tailwind CSS is not supported on Node.js 10.

(cherry picked from commit 2ef1f62)

Author: clydin

tests/legacy-cli/e2e/tests/build/styles/tailwind.ts

@@ -4,6 +4,11 @@ import { ng, silentExec } from '../../../utils/process';
 import { expectToFail } from '../../../utils/utils';
 
 export default async function () {
+  // Tailwind is not supported in Node.js 10
+  if (process.version.startsWith('v10')) {
+    return;
+  }
+
   // Install Tailwind
   await installPackage('tailwindcss');