`struct_field_names` not triggered when 2 or less fields

Summary

As mentioned in #12035, struct_field_names lint is only triggered when struct contains more than 3 fields.
It should be triggered no matter the fields' number.

Lint Name

struct_field_names

Reproducer

I tried this code:

#![warn(clippy::pedantic)]
struct A {
    a_group: String,
    a_location: String,
}

struct_field_names
I expected to see this happen: warning: field name starts with the struct's name

Instead, this happened: no warning about it

Version

rustc 1.76.0-nightly (87e1447aa 2023-11-30)
binary: rustc
commit-hash: 87e1447aadaa2899ff6ccabe1fa669eb50fb60a1
commit-date: 2023-11-30
host: x86_64-unknown-linux-gnu
release: 1.76.0-nightly
LLVM version: 17.0.5