Fix SQL baseline for Parameter_collection_Concat_column_collection test

Update the expected parameter name from @__ints_0 to @__p_0 in the
AssertSql baseline for the Parameter_collection_Concat_column_collection
test, matching the actual SQL generated by EF Core.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: roji

test/EFCore.PG.FunctionalTests/Query/PrimitiveCollectionsQueryNpgsqlTest.cs

@@ -1432,11 +1432,11 @@ public override async Task Parameter_collection_Concat_column_collection(bool as
 
         AssertSql(
             """
-@__ints_0={ '11', '111' } (DbType = Object)
+@__p_0={ '11', '111' } (DbType = Object)
 
 SELECT p."Id", p."Bool", p."Bools", p."DateTime", p."DateTimes", p."Enum", p."Enums", p."Int", p."Ints", p."NullableInt", p."NullableInts", p."NullableString", p."NullableStrings", p."String", p."Strings"
 FROM "PrimitiveCollectionsEntity" AS p
-WHERE cardinality(@__ints_0 || p."Ints") = 2
+WHERE cardinality(@__p_0 || p."Ints") = 2
 """);
     }