Fix tests.

We have to return the value of the parent type column in the map table, not the row to the map table itself.

Author: teo-tsirpanis

src/libraries/System.Reflection.Metadata/src/System/Reflection/Metadata/Internal/Tables.cs

@@ -1228,7 +1228,7 @@ internal TypeDefinitionHandle FindTypeContainingEvent(int eventRowId, int number
             {
                 if (eventRowId <= numberOfEvents)
                 {
-                    return TypeDefinitionHandle.FromRowId(numOfRows);
+                    return GetParentType(numOfRows);
                 }
 
                 return default(TypeDefinitionHandle);
@@ -1252,7 +1252,7 @@ internal TypeDefinitionHandle FindTypeContainingEvent(int eventRowId, int number
                 }
             }
 
-            return TypeDefinitionHandle.FromRowId(row);
+            return GetParentType(row);
         }
     }
 
@@ -1399,7 +1399,7 @@ internal TypeDefinitionHandle FindTypeContainingProperty(int propertyRowId, int
             {
                 if (propertyRowId <= numberOfProperties)
                 {
-                    return TypeDefinitionHandle.FromRowId(numOfRows);
+                    return GetParentType(numOfRows);
                 }
 
                 return default(TypeDefinitionHandle);
@@ -1423,7 +1423,7 @@ internal TypeDefinitionHandle FindTypeContainingProperty(int propertyRowId, int
                 }
             }
 
-            return TypeDefinitionHandle.FromRowId(row);
+            return GetParentType(row);
         }
     }