Remove lodash.findindex from dependencies

[obulat]

Fixes

Fixes #1105 by @sarayourfriend

Description

This PR removes the findindex package from package-json and the lock file. All the usages of lodash.findindex have already been replaced in the code.

Testing Instructions

Passing CI should be enough.

Checklist

• My pull request has a descriptive title (not a vague title like Update index.md).
• My pull request targets the default branch of the repository (main) or a parent feature branch.
• My commit messages follow best practices.
• My code follows the established code style of the repository.
• I added or updated tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no visible errors.

Developer Certificate of Origin

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[dhruvkb]

⚡ Nice.