…wards cp-7.57.2 (#22011)

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## **Description**

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also include relevant motivation and context. Have in mind the following
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2. What is the improvement/solution?
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Uses more accurate content and tone for most translations of Rewards
opt-out content.

## **Changelog**

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CHANGELOG entry: improved translations for Rewards

## **Related issues**

Fixes: n/a

## **Manual testing steps**

```gherkin
Feature: my feature name

  Scenario: user [verb for user action]
    Given [describe expected initial app state]

    When user [verb for user action]
    Then [describe expected outcome]
```

## **Screenshots/Recordings**

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### **Before**

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### **After**

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## **Pre-merge author checklist**

- [x] I’ve followed [MetaMask Contributor
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<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Refines Rewards opt-out copy across multiple locales, updating
titles/descriptions/confirm labels and a few related strings.
> 
> - **i18n (Rewards opt-out)**:
> - Update translation copy for `optout.title`, `optout.description`,
and `optout.confirm` in
`locales/languages/{de,el,es,fr,hi,id,ja,ko,pt,tl,tr,vi,zh}.json` to
more accurate phrasing and irreversible-action tone.
> - Adjust related modal strings where present (e.g.,
`modal.error_message`, `modal.confirm`).
> - Spanish: capitalize `settings.title` to “Configuración de
Recompensas”.
>   - Chinese: refine `optout.modal.error_message` text.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
61a67e2. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

---------

Co-authored-by: Laurel <153323700+i18nlaurel@users.noreply.github.com>