Add dog trial Yhteenveto summary section

[asku1990]

Add the dog-specific trial Yhteenveto summary section from the legacy kokeet.php page.

Scope:

• Show the summary counts and averages for the selected dog.
• Include the legacy sections for Kaikki kokeet, Ajoon johtaneet, Ei palkintosijaa, Palkintosijoille, and Keskeytyneet.
• Keep the normal dog profile and laaja page behavior unchanged apart from exposing the summary data where needed.

Notes:

• This is a follow-up to the dog-specific Kokeet laaja work.
• Keep the summary logic separate from the row rendering logic.