chore(lint): enforce zero warnings and cleanup syntax restrictions (#22902)

eslint.config.js

@@ -35,6 +35,12 @@ const commonRestrictedSyntaxRules = [
     message:
       'Do not throw string literals or non-Error objects. Throw new Error("...") instead.',
   },
+  {
+    selector:
+      'UnaryExpression[operator="typeof"] > MemberExpression[computed=true][property.type="Literal"]',
+    message:
+      'Do not use typeof to check object properties. Define a TypeScript interface and a type guard function instead.',
+  },
 ];
 
 export default tseslint.config(
@@ -133,16 +139,7 @@ export default tseslint.config(
       'no-cond-assign': 'error',
       'no-debugger': 'error',
       'no-duplicate-case': 'error',
-      'no-restricted-syntax': [
-        'error',
-        ...commonRestrictedSyntaxRules,
-        {
-          selector:
-            'UnaryExpression[operator="typeof"] > MemberExpression[computed=true][property.type="Literal"]',
-          message:
-            'Do not use typeof to check object properties. Define a TypeScript interface and a type guard function instead.',
-        },
-      ],
+      'no-restricted-syntax': ['error', ...commonRestrictedSyntaxRules],
       'no-unsafe-finally': 'error',
       'no-unused-expressions': 'off', // Disable base rule
       '@typescript-eslint/no-unused-expressions': [