`block label` matching (template with untyped param) or (iterator) treats param as typed, causing CT errors

[timotheecour]

block label matching template with untyped param treats param as typed, causing error

Example 1

template fun*(a: untyped) = discard
block fun: # BUG
# block: # fun # works
  fun(bar)

Current Output

Error: undeclared identifier: 'bar'

Expected Output

works

Example 2: until this is fixed, block label: should be avoided in tests

typical example: Error: attempting to call routine: 'decodeQuery`gensym0'

import std/[uri]
template main =
  block decodeQuery:
    for ai in decodeQuery("a=1&b=0"): discard
main()

Additional Information

• devel 9ebbe00 1.3.5
• prevents using block elementType: in add typetraits.elementType #14780 for example

[metagn]

Maybe just treat skLabel the same as we treat skModule and skPackage?

Edit: No, but we should easily be able to skip skLabel in general