[WIP] [Experimental] Remove fe filter variations in favor of separately registered wrapper blocks

[samueljseay]

Changes proposed in this Pull Request:

The wrapper blocks for the front-end filters are always named "Product Filter" which makes for confusing block hierarchy. A user should be able to see what filter its for without expanding the block tree. This fixes that by registering separate blocks for each wrapper block instead of using variations.

Resolves #44752

How to test the changes in this Pull Request:

TBD
3.

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• Patch
• Minor
• Major

Type

• Fix - Fixes an existing bug
• Add - Adds functionality
• Update - Update existing functionality
• Dev - Development related task
• Tweak - A minor adjustment to the codebase
• Performance - Address performance issues
• Enhancement - Improvement to existing functionality

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[github-actions]

Hi @albarin,

Apart from reviewing the code changes, please make sure to review the testing instructions as well.

You can follow this guide to find out what good testing instructions should look like:
https://github.com/woocommerce/woocommerce/wiki/Writing-high-quality-testing-instructions

[github-actions]

Test Results Summary

Commit SHA: 5d19e2d

Test 🧪	Passed ✅	Failed 🚨	Broken 🚧	Skipped ⏭️	Unknown ❔	Total 📊	Duration ⏱️
API Tests	259	0	0	2	0	261	0m 37s
E2E Tests	319	0	0	17	0	336	8m 49s

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