Add bytea length regression test

Author: georg-jung

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

@@ -679,6 +679,19 @@ WHERE cardinality(s."IntArray") = 2
 """);
     }
 
+    [ConditionalFact]
+    public virtual async Task Bytea_Length_greater_than_zero()
+    {
+        await AssertQuery(ss => ss.Set<ArrayEntity>().Where(e => e.Bytea.Length > 0));
+
+        AssertSql(
+            """
+SELECT s."Id", s."ArrayContainerEntityId", s."ArrayOfStringConvertedToDelimitedString", s."Byte", s."ByteArray", s."Bytea", s."EnumConvertedToInt", s."EnumConvertedToString", s."IList", s."IntArray", s."IntList", s."ListOfStringConvertedToDelimitedString", s."NonNullableText", s."NullableEnumConvertedToString", s."NullableEnumConvertedToStringWithNonNullableLambda", s."NullableIntArray", s."NullableIntList", s."NullableStringArray", s."NullableStringList", s."NullableText", s."StringArray", s."StringList", s."ValueConvertedArrayOfEnum", s."ValueConvertedListOfEnum", s."Varchar10", s."Varchar15"
+FROM "SomeEntities" AS s
+WHERE length(s."Bytea") > 0
+""");
+    }
+
     #endregion Length/Count
 
     #region Any/All