[4.0] Adding language column to com_finder index backend

[Hackwar]

The list of indexed items in the backend of com_finder does not have a column for the language. Since we have this everywhere else, I'm adding it here, too.

[Quy]

https://github.com/joomla/joomla-cms/pull/21038/files#diff-96ae0370a620b2bdb4168d9f9ebab161R67
<td colspan="7">

Update column to be 7 or 8 depending on Multilanguage::isEnabled()

[Hackwar]

Updated the colspan to 8. I think it would be a waste of CPU cycles to check here again if multilanguage or not. Since it doesn't matter if we have 7, 8, 9 or 42 here, as long as we want it to span the whole table, I wouldn't change this.

[infograf768]

Issue when filtering at the same time content map and language

[infograf768]

I guess changes are needed in ContentmapField.php

[Hackwar]

There is no content that is both french and german at the same time, so this is an issue that we can't really fix. We could hide the language taxonomy branch when #21327 is also merged if it is a real issue.

[infograf768]

I think that we should not present at all in filters or elsewhere anything related to Content Languages when the languagefilter is disabled, as we now do everywhere in Joomla.

[Hackwar]

Taxonomy has no idea what a branch means and we could only introduce a special handling for a branch that is named "Language", which again could not be present at all or deactivated or something. I'm not a fan of that...

[chmst]

I have tested this item ✅ successfully on 77cbda1

I've tested this item with multilingual sample data and made a code inspection.From this point of view the PR works as described.

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[Quy]

I have tested this item ✅ successfully on 52ece71

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[Quy]

RTC

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[Hackwar]

Can we finally merge this?

[roland-d]

Thank you.

[Hackwar]

Thank you!