fixup! feat(@angular/build): add CSP nonce to stylesheet and modulepreload link elements

Author: alan-agius4

packages/angular/build/src/utils/index-file/nonce.ts

@@ -14,6 +14,8 @@ import { htmlRewritingStream } from './html-rewriting-stream';
  */
 const NONCE_ATTR_PATTERN = /ngCspNonce/i;
 
+const TARGET_LINK_RELS: ReadonlySet<string> = new Set(['stylesheet', 'modulepreload']);
+
 /**
  * Finds the `ngCspNonce` value and copies it to all inline `<style>` and `<script> `tags.
  * @param html Markup that should be processed.
@@ -41,8 +43,8 @@ export async function addNonce(html: string): Promise<string> {
         }
 
         if (tagName === 'link' && attr.name === 'rel' && attr.value) {
-          const tokens = attr.value.trim().split(/\s+/);
-          if (tokens.includes('stylesheet') || tokens.includes('modulepreload')) {
+          const tokens = attr.value.toLowerCase().trim().split(/\s+/);
+          if (tokens.some((token) => TARGET_LINK_RELS.has(token))) {
             isTarget = true;
           }
         }