Add optional RAW vectors in RAG results

Alright:

1. Added the method to the interface
3. Made sure base abstract method implements it with a NULL
4. Adjusted the search backend itself to use the column if checkbox is checked

There are some phpcs/cspell issues that needs to be addressed. The phpunit issue would be fixed by merging with 1.2.x

Working on phpcs/cspell issues

Corrected phpcs/cspell issues

I think this needs an update pulled from 1.2.x as the test coverage is failing. It should also be somewhat straightforward to add test coverage for this into AiSearchSetupMySqlTest

Thanks!

We are doing some issue management housekeeping and adding/removing components.

We are removing the "Code" component and want people to categorize issues with the best module/submodule component.

Moving this issue to "AI Search".

See 📌 Update AI module project components Active for more details.

AiSearchSetupMySqlTest is marked as old. in the codebase. should that be reverted? I have added test to AiSearchSetupMySqlTest but since this was named old I am reverting back. Once its confirmed, I will proceed.

Hi! It's blocked at the moment due to an issue with Search API 📌 Reinstate MySQL tests Active

Okay 📌 Reinstate MySQL tests Active is now fixed, rebased now

Okay I believe what is needed left:

1. An update to search_api_ai_search.backend.schema.yml to add the new config to the schema
2. An update hook like ai_search_update_10003 which sets the new config default value to false

I can try to add the missing things here.

Made the required remaining changes listed by @scott_euser. Thanks for that! That made things easy for me to quickly jump in and add them.
Update the test. It looks like it is working now. I see a few failed cases for AiSearchSetupMySqlTest, but they are mostly annotation deprecation warnings and a few others that are not related to the changes included in this MR.

Thanks @abhisekmazumdar - I'll set to RTBC and if you have time Scott to check before Beta release, please do. The asked for fixes are there and I have tested it out.

For the failing tests we have 🐛 AI Search tests is failing on next minor Active as a separate issue.

Thanks all - getting merged.

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