Re-enable serving pages with zip file protocol

What does this MR do?

We recently disabled this feature flag because of an issue.

The issue was fixed and the new version of pages released.

So now we re-enable the feature flag by default again.

Screenshots (strongly suggested)

Does this MR meet the acceptance criteria?

Conformity

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Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
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Security

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