fix: Honor cfg attributes on params when lowering their patterns

[Veykril]

Closes #13375

[Veykril]

Gonna test if bors is able to merge without approval (I'd expect it not to)
@bors r+

[bors]

📌 Commit 63ed71b has been approved by Veykril

It is now in the queue for this repository.

[bors]

⌛ Testing commit 63ed71b with merge 8bd1114...

[bors]

☀️ Test successful - checks-actions
Approved by: Veykril
Pushing 8bd1114 to master...

[bors]

👀 Test was successful, but fast-forwarding failed: 422 At least 1 approving review is required by reviewers with write access.

[lnicola]

@bors r=Veykril

Like this?

[bors]

💡 This pull request was already approved, no need to approve it again.

• This pull request previously failed. You should add more commits to fix the bug, or use retry to trigger a build again.
• There's another pull request that is currently being tested, blocking this pull request: internal: Don't report build-scripts and proc-macros as metadata progress #13385

[bors]

📌 Commit 63ed71b has been approved by Veykril

It is now in the queue for this repository.

[bors]

⌛ Testing commit 63ed71b with merge deddad3...

[bors]

☀️ Test successful - checks-actions
Approved by: Veykril
Pushing deddad3 to master...

[Veykril]

@bors r=Veykril

Like this?

The repo still had (github) approval reviews enabled as a requirement so bors failed. t-infra removed that again now though, since bors is already our approval (and now I can fortunately self-approve again)