missing recover for typo'd `const` in const parameter definition

[BoxyUwU]

Code

pub fn bar<Const N: u8>() {}

Current output

error: expected one of `,`, `:`, `=`, or `>`, found `N`
 --> src/lib.rs:1:18
  |
1 | pub fn bar<Const N: u8>() {}
  |                  ^ expected one of `,`, `:`, `=`, or `>`

Desired output

It should say that the `const` was typo'd as `Const` and should be `Const` preferably with a `help:` thing that shows the diff (and probably should be auto-fixable?)

Rationale and extra context

No response

Other cases

No response

Anything else?

No response