[FIX]: remove toBeInTheDocument error in all test files

[OlgaYasn]

🐛 Description

All the test files containing toBeInTheDocument() have errors : "La propriété 'toBeInTheDocument' n'existe pas sur le type 'Assertion'"

🔍 Steps to Reproduce

Steps to reproduce the behavior:

1. Go to VitalityLighthouseReportsCategoryGrouper-test.tsx
2. Scroll down to the bottom of the page
3. See error

✅ Expected Behavior

The tests files should not contain any error.

❌ Actual Behavior

An error is present everywhere where "toBeInTheDocument()" is used.

📸 Screenshots

💻 Environment

• OS: [e.g., Windows, macOS, Linux]
• Browser: [e.g., Chrome, Safari]
• Version: [e.g., 22]
• Vitality v6y Version: [e.g., 1.0.0]

[OlgaYasn]

Starting point :
If we add @testing-library/jest-dom just to one of the test files, all the error messages disappear.
If vitest.setup.ts file is opened in IDE, the error messages automatically disappear.

Tried methods :

• Adding @testing-library/jest-dom/vitest in types array in tsconfig.json file
• Upgarde @testing-library/jest-dom to the latest version
• Add @vitest/expect as a new dependency
• Create .npmrc file with public-hoist-pattern[]=@types/*