Ban deprecation warning related to Enumerable.sum

What does this MR do and why?

This is a follow-up from Fix Enumerable.sum deprecation warning (!129686 - merged)

Ban deprecation warning related to Enumerable.sum.

From now on the following deprecation warning will fail in developmen/test/CI:

DEPRECATION WARNING: Rails 7.0 has deprecated Enumerable.sum in favor of Ruby's native implementation
available since 2.4.
Sum of non-numeric elements requires an initial argument.

Screenshots or screen recordings

N/A

How to set up and validate locally

1. Open the rails console:

rails c

2. Enter the following message:

message = %{Rails 7.0 has deprecated Enumerable.sum in favor of Ruby's native implementation available since 2.4. Sum of non-numeric elements requires an initial argument.}

3. Execute the following command:

ActiveSupport::Deprecation.warn(message)

MR acceptance checklist

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