Fixed incorrect language condition in LEFT JOIN (liaglv.id_lang instead of agl.id_lang)

[abdullacm]

Questions	Answers
Description?	In the current implementation of the SQL query, the language condition in the LEFT JOIN for the ps_layered_indexable_attribute_group_lang_value table is incorrectly applied to the agl (attribute group language) table. This causes the language condition to be applied to the wrong table, which leads to incorrect results in multi-language environments.
Type?	bug fix
BC breaks?	no
Deprecations?	no
How to test?	In the PrestaShop back office, set the url_name (friendly URL) for the attribute (e.g., size) in multiple languages. On the frontend, switch between languages and apply the filter. Check that the friendly URL in the filter matches the correct language-specific url_name as configured in the backend.

The query is expected to return the url_name (e.g., storrelse) for language ID 3, but it is currently returning the url_name (e.g., size) for language ID 1. This results in incorrect URL names being used for filters in multi-language environments.

[ps-jarvis]

Hello @abdullacm!

This is your first pull request on ps_facetedsearch repository of the PrestaShop project.

Thank you, and welcome to this Open Source community!