[4.0] Fixing Suggestions in Finder/Smart Search

[Hackwar]

The suggestions in Smart Search currently throw an error, because the controller can't find the right model. This fixes that.

Testing instructions

1. Build the index in the backend.
2. Go to the frontend to the Smart Search view and type in "joo". Notice nothing is happening.
3. Apply patch
4. Type in "joo" and see that you get lots of suggestions.

[carlitorweb]

I have tested this item ✅ successfully on 2194013

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[infograf768]

Firefox:
I lose focus when entering letters in the module field. I have to go back into it to add a letter.

And then, when I click on one of the results and click search I get a 404 and this
1055 'joomla_db_finder.t.parent_id' isn't in GROUP BY

[carlitorweb]

@infograf768 I think this bug you mention is for a new issue. This PR is just for match the right model.

[infograf768]

I have tested this item ✅ successfully on 2194013

For what it does, OK here.

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[Hackwar]

@infograf768 The search issue that you mentioned is fixed in #20185. This here is only about suggestions.

[Quy]

RTC

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