fix(content-manager): search relations with contains not startsWith

[Arshiash80]

What does it do?

This PR addresses and fixes two specific issues: #17391 and #18257. The main focus is on resolving the problem related to searching within a relational input.
The changes include using "none" for autocomplete and updating the filter logic to _filter: '$containsi'
Additionally, it enhances the functionality by passing the textValue to the onSearch function in the handleMenuOpen handler, ensuring proper search results when the menu is opened with typing.

Why is it needed?

The issues #17391 and #18257 highlighted a problem with searching in a relational input. This PR aims to solve this issue by making necessary changes and further improves the user experience by passing the text value to the onSearch function.

How to test it?

To verify the behavior of this fix, follow these steps:

1. Set up the environment with the changes from this PR.
2. Navigate to the relational input that was problematic (context of the mentioned issues).
3. Perform a search operation and observe the behavior.
4. Confirm that the autocomplete on the combobox now uses "none," the filter logic is changed to "_filter: '$containsi'," and proper search results are displayed when the menu is opened with typing.

Related issue(s)/PR(s)

This PR is related to the following issues:

• Fixes Relation filed search not working as before + wrong layout #17391
• Fixes search in relation fields does not work properly #18257

Note to Reviewer @joshuaellis :

• This PR is based on the develop branch.
• The title now provides a clear description of the changes made.
• This PR addresses the menu open when typing issue mentioned in your previous comment ("the TLDR; is the filter list is not being updated correctly"). The changes made aim to resolve this issue, and I appreciate your patience in reviewing these updates.

[joshuaellis]

Your changes have broken front end tests, please can you fix them?

[Arshiash80]

@joshuaellis I've sorted out the front-end test issues in commit 7bc8ccc. Take a look, and feel free to let me know if there's anything else needed 👍

[Arshiash80]

Hi @joshuaellis 👋
Wondering if you had a moment to check out my PR. Any fixes needed?

[joshuaellis]

I need to find time again to re-test manually – this will be done when it's done. To set an expectation, this won't be released most likely till next year as well.

[joshuaellis]

Nice fix, QA'd and just updated the title so it's even clearer.

[Arshiash80]

Nice fix, QA'd and just updated the title so it's even clearer.

Thanks! Appreciate the feedback and the title update. 👍