Fixed how sr_bimanual.launch deals with product types

[BenStarmerSmith]

Proposed changes

Made sr_bimanual.launch look like srhand.launch by making one variable to change hand_type and it automatically updates the hand_version.

Checklist

Before posting a PR ensure that from each of the below categories AT LEAST ONE BOX HAS BEEN CHECKED. If more than one category is applicable then more can be checked. Also ensure that the proposed changes have been filled out with relevant information for reviewers.

Tests

• [ ] No tests required to be added. (For small changes that will be tested by CI/CD infrastructure).
• [ ] Added/Modified automated and PhantomHand CI tests (if a new class is added (Python or C++), the interface of that class must be unit tested).
• [ ] Manually tested in simulation (if simulation specific or no hardware required to test the functionality).
• [ ] Manually tested on hardware (if hardware specific or related).

Documentation

• [ ] No documentation required to be added.
• [ ] Added documentation (For any new feature, explain what it does and how to use it. Write the documentation in a relevant space, e.g. Github, Confluence, etc).
• [ ] Updated documentation (For changes to pre-existing features mentioned in the documentation).

[BenStarmerSmith]

Screenshot of it working with Aurora oneliner (docker_deploy with hand_lite product)

[BenStarmerSmith]

Changed to match this file: https://github.com/shadow-robot/sr_interface/blob/dd12cb6b681c1ceb303a794bbbf00b8a27f80cd5/sr_robot_launch/launch/srhand.launch#L42-L46