fix(@angular/build): support hyphens and underscores when stripping chunk hash in chunk optimizer

Updates the regular expression in chunkFileNames from /-[a-zA-Z0-9]{8}$/ to /-[a-zA-Z0-9_-]{8}$/ to properly strip esbuild intermediate chunk hashes containing hyphens or underscores before applying Rolldown/Rollup chunk hashes.

Author: alan-agius4

packages/angular/build/src/builders/application/chunk-optimizer.ts

@@ -302,7 +302,7 @@ export async function optimizeChunks(
         minify: { mangle: false, compress: false },
         sourcemap,
         chunkFileNames: (chunkInfo) =>
-          `${chunkInfo.name.replace(/-[a-zA-Z0-9]{8}$/, '')}-[hash].js`,
+          `${chunkInfo.name.replace(/-[a-zA-Z0-9_-]{8}$/, '')}-[hash].js`,
       });
       optimizedOutput = result.output;
     } else {
@@ -324,7 +324,7 @@ export async function optimizeChunks(
         compact: true,
         sourcemap,
         chunkFileNames: (chunkInfo) =>
-          `${chunkInfo.name.replace(/-[a-zA-Z0-9]{8}$/, '')}-[hash].js`,
+          `${chunkInfo.name.replace(/-[a-zA-Z0-9_-]{8}$/, '')}-[hash].js`,
       });
       optimizedOutput = result.output;
     }