`WebDataStreamNotAvailableNotification` triggers GA4 settings fetch on dashboard when module not connected

## Bug Description

In #9291 we updated this notification to use the new Notifications API. In doing so, a small regression was introduced which causes GA4 settings to be fetched when the module isn't connected.

## Steps to reproduce

1. Connect Site Kit from a clean state with minimal setup only
2. Observe `analytics-4` settings fetch on dashboard

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## Acceptance criteria

* No requests to Analytics endpoints should be invoked on the SK dashboard when the module is not connected

## Implementation Brief

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### Test Coverage

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## QA Brief

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## Changelog entry

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