Add primary search option of Title + Contributor Order lines

Overview: When searching in POLs, a user needs to be able to combine data from the title and contributor fields, so that they can refine search results.

1. Scenario 1
   • Given the Orders app landing page
   • When a user wants to search within POLs (the purchase order line toggle is highlighted)
   • Then they should be able to retrieve combined (title + contributor) keyword results in these searches:
     • Keyword
     • Title + Contributor
2. Scenario 2
   • Ensure automated testing coverage for this new code is 80% plus and confirm with screenshot

Examples:

• Title: The history of Sweden
• Contributor: John Smith
• Be able to search as:
  • history sweden john smith
  • history smith
  • history john smith
  • smith sweden
  • john smith sweden

• Title: Romeo and Juliet: new critical perspectives
• Contributor: Jane Doe
• Be able to search as:
  • romeo juliet doe
  • jane doe critical
  • doe perspectives