fix: add esbuild-wasm dependency for serwist CI build

@serwist/turbopack defaults to esbuild-wasm on non-Windows platforms
(useNativeEsbuild only defaults true on win32), so the Linux CI runner
failed with ERR_MODULE_NOT_FOUND while esbuild alone worked locally on
Windows. Installing esbuild-wasm alongside esbuild covers both paths.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

package-lock.json

@@ -76,6 +76,7 @@
         "@vitejs/plugin-react": "^5.1.0",
         "@vitest/coverage-v8": "^4.1.11",
         "esbuild": "^0.28.2",
+        "esbuild-wasm": "^0.28.2",
         "eslint": "^9.39.0",
         "eslint-config-next": "16.3.3",
         "husky": "^9.1.7",
@@ -10148,6 +10149,19 @@
         "@esbuild/win32-x64": "0.28.2"
       }
     },
+    "node_modules/esbuild-wasm": {
+      "version": "0.28.2",
+      "resolved": "https://registry.npmjs.org/esbuild-wasm/-/esbuild-wasm-0.28.2.tgz",
+      "integrity": "sha512-GccVwhv3mmOUVQHCQm2Ox/rby8n/EqUwvZxE6Pjfikrq/lWw9g9WX/u9EykWnpot3Ko6j426DgQdea2xWKIAQA==",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "esbuild": "bin/esbuild"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/escalade": {
       "version": "3.2.0",
       "resolved": "https://registry.npmjs.org/escalade/-/escalade-3.2.0.tgz",