…onsent prompt (#30808)

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## **Description**

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also include relevant motivation and context. Have in mind the following
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Fixes an issue where the marketing_consent notification pre-prompt could
be re-triggered during the same app session after the user turned
marketing consent off in Settings.

The pre-prompt is intended to behave as a startup flow. This change
latches the marketing consent value used for startup prompt resolution,
so once startup eligibility has resolved, later Redux updates from user
actions do not cause the prompt to appear unexpectedly.

Social-login marketing consent backfill is still respected as part of
startup resolution. If backfill is pending, the prompt waits for it to
clear, then decides once using the resolved consent value.

Risk
Low risk.

This change is scoped to usePushPrePromptVariant, which only decides
which notification pre-prompt variant to show. It does not change
notification registration, OS permission requests, Settings behavior,
analytics opt-in/out behavior, or persisted storage keys.

The change preserves existing behavior for the main paths:

Users without OS push permission still resolve to the push permission
prompt first.
Users who already saw the pre-prompt remain suppressed by
PUSH_PRE_PROMPT_SHOWN.
Users with marketing consent enabled do not see the marketing consent
prompt.
Users with marketing consent disabled at startup can still see the
one-time startup prompt if otherwise eligible.
Social-login users still wait for marketing consent backfill before the
marketing prompt decision is made.
The risk is low because the fix narrows when the marketing consent
prompt can appear rather than expanding eligibility. The only behavior
removed is the unintended mid-session re-trigger after Settings opt-out.

## **Changelog**

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CHANGELOG entry: Fixed an issue where the marketing consent notification
pre-prompt could reappear after turning marketing consent off in
Settings.

## **Related issues**

Fixes:

## **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**

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- [ ] I've followed [MetaMask Contributor
Docs](https://github.com/MetaMask/contributor-docs) and [MetaMask Mobile
Coding
Standards](https://github.com/MetaMask/metamask-mobile/blob/main/.github/guidelines/CODING_GUIDELINES.md).
- [ ] I've completed the PR template to the best of my ability
- [ ] I've included tests if applicable
- [ ] I've documented my code using [JSDoc](https://jsdoc.app/) format
if applicable
- [ ] I've applied the right labels on the PR (see [labeling
guidelines](https://github.com/MetaMask/metamask-mobile/blob/main/.github/guidelines/LABELING_GUIDELINES.md)).
Not required for external contributors.

#### Performance checks (if applicable)

- [ ] I've tested on Android
  - Ideally on a mid-range device; emulator is acceptable
- [ ] I've tested with a power user scenario
- Use these [power-user
SRPs](https://consensyssoftware.atlassian.net/wiki/spaces/TL1/pages/edit-v2/401401446401?draftShareId=9d77e1e1-4bdc-4be1-9ebb-ccd916988d93)
to import wallets with many accounts and tokens
- [ ] I've instrumented key operations with Sentry traces for production
performance metrics
- See [`trace()`](/app/util/trace.ts) for usage and
[`addToken`](/app/components/Views/AddAsset/components/AddCustomToken/AddCustomToken.tsx#L274)
for an example

For performance guidelines and tooling, see the [Performance
Guide](https://consensyssoftware.atlassian.net/wiki/spaces/TL1/pages/400085549067/Performance+Guide+for+Engineers).

## **Pre-merge reviewer checklist**

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- [ ] I've manually tested the PR (e.g. pull and build branch, run the
app, test code being changed).
- [ ] I confirm that this PR addresses all acceptance criteria described
in the ticket it closes and includes the necessary testing evidence such
as recordings and or screenshots.