Add a custom callback param to the localesChanged event

[vitorflg]

The context for this change is in the #prod-muji-eu channel.

What does this PR do? *

As the title says, it adds a new param to the localesChanged event handler for a custom callback, considering that could be other options besides a page reload.

How to test it? *

https://www.loom.com/share/0ea28c9573754baeb8d7d96e3ded5156

https://vitorflg--muji.myvtex.com/admin/cms/site-editor

Describe alternatives you've considered, if any. *

X

Related to / Depends on *

It's a PR that support another one -> vtex-apps/admin-pages#374

[vtex-io-ci-cd]

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• Patch (backwards-compatible bug fixes)

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[vtex-io-docs-bot]

Beep boop 🤖

I noticed you didn't make any changes at the docs/ folder

• There's nothing new to document 🤔
• I'll do it later 😞

In order to keep track, I'll create an issue if you decide now is not a good time

• I just updated 🎉🎉

[vtex-io-ci-cd]

Your PR has been merged! App is being published. 🚀
Version 8.127.0 → 8.128.0

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