[API PULL] Fix tests for Notifying delete products

[puntope]

Changes proposed in this Pull Request:

There is a test failing in regards

Automattic\WooCommerce\GoogleListingsAndAds\Tests\Unit\Product\SyncerHooksTest::test_delete_created_product_calls_notify_directly
Expectation failed for method name is "notify" when invoked 1 time(s).
Method was expected to be called 1 times, actually called 0 times.

This seems to happen because the metadata is empty after the code calls the delete hook. To solve it. I moved the notifications to the pre-delete.

Screenshots:

Detailed test instructions:

1. Tests are passing
2. Create a simple product. It will schedule a create notification. See it works as expected and shows in the logs after the action is completed.
3. Trash the simple product. See directly the delete notification in the logs.

Additional details:

Changelog entry

Tweak - Logic for Delete notifications.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.3%. Comparing base (1c6a902) to head (5b6924f).
Report is 18 commits behind head on develop.

Additional details and impacted files

@@            Coverage Diff            @@
##             develop   #2626   +/-   ##
=========================================
  Coverage       65.3%   65.3%           
  Complexity      4596    4596           
=========================================
  Files            474     474           
  Lines          17893   17896    +3     
=========================================
+ Hits           11685   11688    +3     
  Misses          6208    6208           

Flag	Coverage Δ
php-unit-tests	65.3% <100.0%> (+<0.1%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
src/Product/SyncerHooks.php	90.0% <100.0%> (ø)

... and 1 file with indirect coverage changes

[jorgemd24]

Thanks @puntope for fixing this! I tested it locally, and everything is working well.