[#90] Fix the session count in top_devices and top_browsers, using an…

[alejandromav]

Description

Using analytics_sessions_mv instead of analytics_sources_mv in the top_devices and top_browsers endpoints.

Another positive side effect is that those endpoint will perform better at scale, given the cardinality of analytics_sessions_mv is lower.

Fixes #90

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation

How Has This Been Tested?

I was able to reproduce this issue:

• Test top_devices endpoint reports and accurate session count with the change
• Same for top_browsers

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• I have update the CHANGELOG
• New and existing unit tests pass locally with my changes

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Name	Status	Preview	Comments	Updated (UTC)
analytics-dashboard	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 25, 2024 5:06pm

[rmorehig]

Tested the new endpoints and working as expected!