Fix aggregation of additional action metrics

[sgiehl]

Description:

Some plugins like PagePerformance or Bandwidth are adding additional metrics to the action reports. Some of those metrics need to be aggregated using min, max or avg aggregation.

As those column aggregation where not correctly set for the datatables, they were by default aggregated by summing the values up. This resulted in incorrect values.

fixes #22350

Review

• Functional review done
• Potential edge cases thought about (behavior of the code with strange input, with strange internal state or possible interactions with other Matomo subsystems)
• Usability review done (is anything maybe unclear or think about anything that would cause people to reach out to support)
• Security review done
• Wording review done
• Code review done
• Tests were added if useful/possible
• Reviewed for breaking changes
• Developer changelog updated if needed
• Documentation added if needed
• Existing documentation updated if needed

[rr-it]

Please also check implementation of min.

[rr-it]

There are still some values that do not look correct.

[rr-it]

@sgiehl Looks like this branch https://github.com/matomo-org/matomo/tree/actiontotals was accidentally overridden with some other changes:

Edit: This was just a rebase - everything looks good.

[caddoo]

@sgiehl to help me review this, can you explain steps to reproduce.

I know in the issue you mentioned it's hard to reproduce in the UI, but can you help me with steps in the API.

Also the issue mentions the expected behavior is:
Metrics should be correctly calculated
Can you explain exactly what that means.