Block Editor Tracking: Fix error caused by generalizing block variation tracking

[david-szabo97]

Changes proposed in this Pull Request

• Block Editor Stats - Generalize block variation tracking. #53606 causes an error on sites that use Gutenberg earlier than version 10.6.

Testing instructions

• Open a site that uses Gutenberg version earlier than 10.6.
• Insert "Twitter" block, make sure it's inserted and no errors in the console.

Related to #53410

[matticbot]

Link to Calypso live: https://calypso.live?image=registry.a8c.com/calypso/app:build-7991
Link to Jetpack Cloud live: https://calypso.live?image=registry.a8c.com/calypso/app:build-7991&env=jetpack

[matticbot]

This PR modifies the release build for wpcom-block-editor

To test your changes on WordPress.com, run install-plugin.sh wpcom-block-editor fix/generalized-block-variation-tracking-undefined-error on your sandbox.

To deploy your changes after merging, see the documentation: PCYsg-l4k-p2

[matticbot]

This PR does not affect the size of JS and CSS bundles shipped to the user's browser.

Generated by performance advisor bot at iscalypsofastyet.com.

[Addison-Stavlo]

This works for me, and isn't erroring on legacy Gutenberg sites. Thanks for fixing this! I should have checked for the function in the first place. 🤦‍♀️