Change hasItems to look at filteredItems in block editor inserter

[StevenDufresne]

Description

This PR removes the use of useMemo on the suggestion list and addresses issue: #21069.

We most likely want to revisit the logic here but for now, this will restore functionality.

How has this been tested?

1. Using the steps to reproduced contained in the issue linked above.

Types of changes

Removing useMemo on the suggestion list. This will result in a slight degrade in performance for users that have a large number of blocks... Should be negligible.

Checklist:

• My code is tested.
• My code follows the WordPress code style.
• My code follows the accessibility standards.
• My code has proper inline documentation.
• I've included developer documentation if appropriate.
• I've updated all React Native files affected by any refactorings/renamings in this PR.

[StevenDufresne]

Opened this a bit premature. :)

To do:

1. Figure out why the test was passing.
2. Figure out why 2 tests are failing after change.

[StevenDufresne]

@youknowriad I updated the hasItems check to look at the filteredItems list. These changes work as expected.

[youknowriad]

Thanks. LGTM