[perl #131181] [BUG] "Invalid BUILD_LEAST_DERIVED plan" when `but`-ing a role with native-int attribute

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# New Ticket Created by  Zoffix Znet 
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14:51   Zoffix  m: $ = 42 but role { has int $!x  }
14:51   camelia         rakudo-moar 277b6e: ( no output )
14:51   Zoffix  m: $ = 42 but role { has Int $!x = 42  }
14:51   camelia         rakudo-moar 277b6e: ( no output )
14:51   Zoffix  m: $ = 42 but role { has int $!x = 42 }
14:51   camelia         rakudo-moar 277b6e: OUTPUT: «Invalid 
BUILD_LEAST_DERIVED plan␤  in block <unit> at <tmp> line 1␤␤»