different fix for MDEV-26778

Author: vuvova

sql/sql_insert.cc

@@ -4193,7 +4193,6 @@ int select_insert::send_data(List<Item> &values)
  bool error=0;
 
  thd->count_cuted_fields= CHECK_FIELD_WARN;// Calculate cuted fields
- table->reset_default_fields();
  store_values(values);
  if (table->default_field &&
  unlikely(table->update_default_fields(info.ignore)))

sql/sql_load.cc

@@ -1106,7 +1106,6 @@ read_sep_field(THD *thd, COPY_INFO &info, TABLE_LIST *table_list,
  }
  }
  restore_record(table, s->default_values);
- table->reset_default_fields();
 
  while ((item= it++))
  {

sql/sql_update.cc

@@ -51,7 +51,7 @@
  compare_record(TABLE*).
  */
 bool records_are_comparable(const TABLE *table) {
- return !table->versioned(VERS_TRX_ID) &&
+ return !table->versioned() &&
  (((table->file->ha_table_flags() & HA_PARTIAL_COLUMN_READ) == 0) ||
  bitmap_is_subset(table->write_set, table->read_set));
 }

sql/table.cc

@@ -9164,13 +9164,11 @@ bool TABLE::vers_update_fields()
  {
  DBUG_ASSERT(0);
  }
- vers_start_field()->set_has_explicit_value();
  }
 
  if (!versioned(VERS_TIMESTAMP) || !vers_end_field()->has_explicit_value())
  {
  vers_end_field()->set_max();
- vers_end_field()->set_has_explicit_value();
  res= true;
  }
 
@@ -9185,7 +9183,6 @@ void TABLE::vers_update_end()
  if (vers_end_field()->store_timestamp(in_use->query_start(),
  in_use->query_start_sec_part()))
  DBUG_ASSERT(0);
- vers_end_field()->set_has_explicit_value();
 }
 
 /**