Fix Palworld - Added SteamSDK to Install

[ImKringle]

Description

Closes #2866 - PocketPairs SH file is supposed to do this on its own. Not using it requires its added in the install

Relevant test that it fixed the issue: https://github.com/parkervcp/eggs/issues/2866#issuecomment-2041199579

Checklist for all submissions

• [x] Have you followed the guidelines in our Contributing document?
• [x] Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• [x] Have you tested and reviewed your changes with confidence that everything works?
• [x] Did you branch your changes and PR from that branch and not from your master branch?
  • If not, why?:

• [x] You verify that the start command applied does not use a shell script
  • [ ] If some script is needed then it is part of a current yolk or a PR to add one
• [x] The egg was exported from the panel

[ImKringle]

Ah PRd the wrong egg script, fixing!

[ImKringle]

Okay now its right lol sorry bout that