Fix: Ensure all code paths return a DrupalJsonApiParams instance in getParams function

[recky-a]

This pull request is for: (mark with an "x")

• [x] examples/*
• [ ] modules/next
• [ ] packages/next-drupal
• [ ] starters/basic-starter
• [ ] starters/graphql-starter
• [ ] starters/pages-starter
• [ ] Other

Desription

• Updated getParams function to ensure every code path returns a DrupalJsonApiParams instance.
• Added default return value to handle unknown name cases.