[jOOQ/jOOQ#12697] Mapped JSON in multiset causes multiple ad-hoc conversions

This fix includes:

- [jOOQ/jOOQ#12713] Debug log output causes exceptions when data type converter is re-applied incompatibly

jOOQ/src/main/java/org/jooq/impl/AbstractRecord.java

@@ -1017,8 +1017,9 @@ abstract class AbstractRecord extends AbstractStore implements Record {
         for (int i = 0; i < s && i < t; i++) {
             int j = indexMapping == null ? i : indexMapping[i];
 
+            // [#12697] Don't re-apply data type conversion, assuming it already happened
             if (source.field(j) != null && source.changed(j))
-                Tools.setValue(this, field(j), j, source, j);
+                set((Field) field(j), j, source.get(j));
         }
     }
 

jOOQ/src/main/java/org/jooq/impl/AbstractResult.java

@@ -1361,7 +1361,7 @@ abstract class AbstractResult<R extends Record> extends AbstractFormattable impl
         }
         else if (value instanceof Record) { Record r = (Record) value;
             formatted += Arrays
-                .stream(r.valuesRow().fields())
+                .stream(r.intoArray())
                 .map(f -> format0(f, false, visual))
                 .collect(joining(", ", "(", ")"));
         }