Filter data count mismatch > Ensure a single request is made to return the correct attributes count

[nefeline]

While working on #8599 it was possible to verify that 3 API requests are made to return the attribute count data, but only the third one contains the term slug variable required to correctly calculate the results. As a consequence, in addition to fixing the queries, we also need to ensure the request is triggered once and only when needed.

[nefeline]

Hey @roykho! This issue is one of the last still pending for wrapping up our Filter data count mismatch project, and since I'll be AFK for the rest of this week, it would be nice if you could continue the investigation here: we can re-group and discuss next week!

Initial Setup:

• Checkout to Filter data count mismatch > Create the get_attribute_and_meta_counts method #8599
• Add these methods to the wp-content/plugins/woocommerce-blocks/src/StoreApi/Utilities/ProductQueryFilters.php class. They are a raw version of the atomic queries that you've been working on #8598 and #8645. When these PRs are merged and the branch on Filter data count mismatch > Create the get_attribute_and_meta_counts method #8599 is updated with trunk, this step can be skipped (ps: I did a small change within the get_product_by_metas method to update the number format on lines L26 and L33 that we may need to incorporate to the atomic query on Add get_product_by_metas method to query the lookup table #8645 : this change is necessary for the queries to work as expected).
• Create a new page with the following blocks:
  • Products (Beta)
  • Filter by Attribute (color)
  • Filter by Attribute (size)
  • Filter by Price
  • Filter by Stock

Current Scenario:

Without any changes on the JS side, this is what currently happens on the FE:

Screen.Recording.2023-03-14.at.22.36.27.mov

• Notice how the attribute counts don't change at all when any of the filter attributes are selected.
• Notice how the attribute counts are correctly updated when the price changes.

Now apply the changes done on #8724 , you should see the following:

Screen.Recording.2023-03-14.at.22.49.01.mov

• Notice how the attribute counts are updated correctly when the color attribute is filtered, but the Filter block for the attributes size disappears from the screen.
• Notice how the attribute counts are updated correctly when the price changes.

So while with the changes made on #8724 we are fixing the problem when an individual filter by attribute block is displayed on a page, that's not the case when we have multiple filter blocks. In this example, we still need to figure out why the second attribute filter block is not rendered when filtering attributes on the first.