add changeset for editor extension collection

[oluwatimio]

WHY are these changes introduced?

Adds changeset for #3551

WHAT is this pull request doing?

How to test your changes?

Post-release steps

Measuring impact

How do we know this change was effective? Please choose one:

• n/a - this doesn't need measurement, e.g. a linting rule or a bug-fix
• Existing analytics will cater for this addition
• PR includes analytics changes to measure impact

Checklist

• I've considered possible cross-platform impacts (Mac, Linux, Windows)
• I've considered possible documentation changes
• I've made sure that any changes to dev or deploy have been reflected in the internal flowchart.

[github-actions]

Thanks for your contribution!

Depending on what you are working on, you may want to request a review from a Shopify team:

• Themes: @shopify/advanced-edits
• UI extensions: @shopify/ui-extensions-cli
  • Checkout UI extensions: @shopify/checkout-ui-extensions-api-stewardship
• Hydrogen: @shopify/hydrogen
• Other: @shopify/cli-foundations

[oluwatimio]

I had to create this file manually. I did not see any documentation pointing out how to generate a new change set

[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟡	Statements	72.2%	6746/9344
🟡	Branches	69.29%	3294/4754
🟡	Functions	70.88%	1799/2538
🟡	Lines	73.37%	6361/8670

Test suite run success

1615 tests passing in 754 suites.

Report generated by 🧪jest coverage report action from 6c76035

[ryancbahan]

thanks!

[alfonso-noriega]

I am late but LGTM