[ruby-core:115913] [Ruby master Bug#20091] Anonymous block method parameters no longer usable within blocks with ruby 3.3

Issue #20091 has been reported by sigsys (Math Ieu).

----------------------------------------
Bug #20091: Anonymous block method parameters no longer usable within blocks with ruby 3.3
https://bugs.ruby-lang.org/issues/20091

* Author: sigsys (Math Ieu)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [amd64-freebsd13]
* Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
----------------------------------------
This used to work on 3.1 and 3.2, but now fails with "anonymous block parameter is also used within block (SyntaxError)":


```
def g = yield

def f(&)
  g { g(&) }
end

p f { 123 }
```

And something like this also fails:

```
def f(&)
  loop do
    return g(&)
  end
end
```




-- 
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