Add issue reproducer as test

Author: ozkutuk

plugins/hls-explicit-record-fields-plugin/test/Main.hs

@@ -36,6 +36,7 @@ test = testGroup "explicit-fields"
     , mkTestNoAction "Puns" "Puns" 12 10 12 31
     , mkTestNoAction "Infix" "Infix" 11 11 11 31
     , mkTestNoAction "Prefix" "Prefix" 10 11 10 28
+    , mkTestNoAction "PartiallyAppliedCon" "PartiallyAppliedCon" 7 8 7 12
     , mkTest "PolymorphicRecordConstruction" "PolymorphicRecordConstruction" 15 5 15 15
     ]
   , testGroup "inlay hints"

plugins/hls-explicit-record-fields-plugin/test/testdata/noop/PartiallyAppliedCon.hs

@@ -0,0 +1,8 @@
+{-# LANGUAGE Haskell2010 #-}
+
+module PartiallyAppliedCon where
+
+data T = MkT { fa :: Int, fb :: Char }
+
+foo :: Int -> Char -> T
+foo x = MkT x