fix: addition of Meta initial scale to all examples and starters inside index.html

[tomashco]

Checklist

• [ ] run npm run test and npm run benchmark
• [ ] tests and/or benchmarks are included
• [ ] documentation is changed or added
• [X] commit message and code follows the Developer's Certification of Origin and the Code of conduct

Addition of:

To prevent viewport to be set at 980px even if it is on mobile, as described here: Viewport meta tag

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