Remove flag arguments from AR methods

[Tigrov]

• [ ] ActiveRecordInterface::getOldPrimaryKey(bool $asArray = false) split to

  • getOldPrimaryKey(): mixed equals to ActiveRecordInterface::getOldPrimaryKey(false)
  • getOldPrimaryKeys(): array equals to ActiveRecordInterface::getOldPrimaryKey(true)

• [ ] ActiveRecordInterface::getPrimaryKey(bool $asArray = false) split to

  • getPrimaryKey(): mixed equals to ActiveRecordInterface::getPrimaryKey(false)
  • getPrimaryKeys(): array equals to ActiveRecordInterface::getPrimaryKey(true)

• [x] BaseActiveRecord::isAttributeChanged(string $name, bool $identical = true) split to

  • isAttributeChanged(string $name) equals to BaseActiveRecord::isAttributeChanged(string $name, true)
  • isAttributeChangedEqual(string $name) equals to BaseActiveRecord::isAttributeChanged(string $name, false)

This removes extra check for these methods.