Nested Hash schema with Custom Type constructor not constructing the right type

[edgenard]

Describe the bug

When using a custom type for example: ExpirationDate = Types::DateTime.constructor { |value| value.to_time.round.to_datetime }
The constructor does not apply to nested hashes in a schema:

   
    ExpirationDate = Types::DateTime.constructor { |value| value.to_time.round.to_datetime }
    NestedCustomTypeHash = Dry::Schema.define do
      required(:foo).hash do
        required(:bar).value(ExpirationDate)
      end
    end

result = NestedCustomTypeHash.call(foo: { bar: '2021-11-11T00:00:00+00:00'} )
# result.errors.to_h => {:foo=>{:bar=>["must be a date time"]}}
  

To Reproduce

I've reproduced it in this PR: #395 but could not figure out how to get the spec to pass

Expected behavior

result = NestedCustomTypeHash.call(foo: { bar: '2021-11-11T00:00:00+00:00'} )
# result.to_h => {:foo=>{:bar=> #<DateTime: 2021-11-11T00:00:00+00:00 ((2459530j,0s,0n),+0s,2299161j)>}}

My environment

• Affects my production application: YES
• Ruby version: 2.7.5
• OS: MacOs 11.6.2