fix: Jest timer error in unit test

[NicolasMassart]

Description

Fixes the following error message when runnning app/components/Views/QRTabSwitcher/QRTabSwitcher.test.tsx test:

ReferenceError: You are trying to access a property or method of the Jest environment after it has been torn down. From app/components/Views/QRTabSwitcher/QRTabSwitcher.test.tsx.

      at Timeout.now [as _onTimeout] (node_modules/react-native/jest/setup.js:28:41)

Related issues

Fixes: N/A

Manual testing steps

N/A

Screenshots/Recordings

N/A

Before

N/A

After

N/A

Pre-merge author checklist

• I’ve followed MetaMask Contributor Docs and MetaMask Mobile Coding Standards.
• 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 format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• 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.

[github-actions]

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[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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