Fix no-node-access false positives for object literal properties

[sjh9714]

Summary

Fixes false positives in no-node-access when accessing data properties such as children or activeElement on plain object literals.

What changed

• Added regression coverage for object literal properties whose names overlap with DOM node properties.
• Updated the rule to skip these accesses when the object resolves to an object literal declaring that property.
• Preserved existing reports for Testing Library DOM node access, including query results and render containers.

Why

Issue #683 reports that no-node-access can report regular data objects if their property names overlap with DOM node-returning properties. These object properties are not direct DOM node access and should not be reported.

Testing

• pnpm test tests/rules/no-node-access.test.ts
• pnpm run lint
• pnpm run type-check
• pnpm test

Fixes #683