Replace deprecated lodash.isequal with internal implementation to remove warnings

[r-farkhutdinov]

Motivation

This PR removes the deprecated lodash.isequal dependency, which is currently used by this package and causes deprecation warnings for downstream consumers.

Since lodash.isequal@4.5.0 is no longer maintained and emits security/audit warnings, we’ve replaced it with a minimal internal utility that performs deep equality checks for arrays and plain objects.

What was done

• Removed lodash.isequal from dependencies
• Added internal isEqual utility that handles the required comparison logic

Benefits

• No more deprecated or noisy audit warnings in dependent projects
• Lighter dependency footprint
• Improved maintainability and forward compatibility

---

Let me know if you'd prefer to replace it with a different utility (e.g. fast-deep-equal) instead of a custom implementation.

[AssafGolani]

I hope this PR will merge

[aqeelat]

@r-farkhutdinov why not use lodash directly and let tree-shaking remove what is not needed?