Disallow unsafe type assertions (#18688)

packages/cli/src/config/extension.ts

@@ -47,6 +47,7 @@ export function loadInstallMetadata(
   const metadataFilePath = path.join(extensionDir, INSTALL_METADATA_FILENAME);
   try {
     const configContent = fs.readFileSync(metadataFilePath, 'utf-8');
+    // eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion
     const metadata = JSON.parse(configContent) as ExtensionInstallMetadata;
     return metadata;
   } catch (_e) {