Improve stats presentation for specialization

[penguin-wwy]

SEND and FOR_ITER use the same function to count the type of failure of specialization, which should require a minor improvement to make the correct specialization fail kind appear.

For example.

Before improvement:

specialization stats for SEND family

Failure kind	Count	Ratio
other	27,540	96.6%
kind 13	980	3.4%

After improvement:

specialization stats for SEND family

Failure kind	Count	Ratio
async generator send	24,440	86.5%
other	3,100	11.0%
list	700	2.5%

Linked PRs

• gh-102181: Improve stats presentation for specialization #102182