fix "derivable_impls: attributes are ignored"

[kiscad]

Please write a short comment explaining your change (or "none" for internal only changes)

changelog: [derivable_impls]: allow the lint when the trait-impl methods has any attribute.

fixes #11368

[rustbot]

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[kiscad]

r? @matthiaskrgr

[matthiaskrgr]

@bors r+
thanks

[bors]

📌 Commit 90fcc67 has been approved by matthiaskrgr

It is now in the queue for this repository.

[bors]

⌛ Testing commit 90fcc67 with merge 4736908...

[bors]

☀️ Test successful - checks-action_dev_test, checks-action_remark_test, checks-action_test
Approved by: matthiaskrgr
Pushing 4736908 to master...

[bors]

☀️ Test successful - checks-action_dev_test, checks-action_remark_test, checks-action_test
Approved by: matthiaskrgr
Pushing 4736908 to master...