EntityField::getValue method has unexpected behavior for multivalue fields

If you look at the code in \Drupal\views\Plugin\views\field\EntityField::getValue you can see that there is some extra logic needed to get the correct value, mainly getting the right translation for the requested data. So we can't just grab the value from the row, because that would lead to unexpected values being shown.

Bu, yeah, the docs on that are a bit unclear as to the exact purpose of this method. But I don't think we can really change the way it works without breaking a lot of other things.

Could be added some new method then?

There is an use case → for getting values from particular Views row programatically.

The patch provided at that issue contains source code, that calls this method (indirectly).

Maybe there can be a new public method like i.e. Drupal\views\Plugin\views\field\FieldHandlerInterface::getRowValue that would quarantee, that result contains just values from particular row?

This patch addresses the issue where the `getValue()` method in Views returns values from multiple rows, even when it should only return values for a single row.

Steps to reproduce:
1. Create a view that shows entity fields.
2. Add a multi-value field and ensure the "Display all values in the same row" option is unchecked.
3. Programmatically execute the view and use the `getValue()` method to retrieve field values.

Expected behavior: The field values should only display for the given row.
Patch solution: Adjusted the `getValue()` method to fetch data directly from the passed `$row` argument rather than `$row->_entity`.

Test instructions:

- Create a view with a multi-value field and verify that only values for a specific row are returned.

MR is created
https://git.drupalcode.org/project/drupal/-/merge_requests/9914

core/modules/views/src/Plugin/views/field/EntityField.php

/**
   * {@inheritdoc}
   */
  public function getValue(ResultRow $values, $field = NULL) {
    // Ensure that we're getting the specific entity for the current row.
    $entity = $this->getEntity($values);

    // Ensure the object is not NULL before attempting to translate it.
    if ($entity === NULL) {
      return NULL;
    }
    // Retrieve the translated object for this specific row.
    $translated_entity = $this->getEntityFieldRenderer()->getEntityTranslationByRelationship($entity, $values);

    // Fetch the field items for the current entity's row.
    $field_item_list = $translated_entity->{$this->definition['field_name']} ?? NULL;

    if ($field_item_list === NULL) {
      // There isn't anything we can do without a valid field.
      return NULL;
    }

    $field_item_definition = $field_item_list->getFieldDefinition();

    $values = [];
    foreach ($field_item_list as $field_item) {
      /** @var \Drupal\Core\Field\FieldItemInterface $field_item */
      if ($field) {
        $values[] = $field_item->$field;
      }
      // Find the value using the main property of the field.
      elseif ($main_property_name = $field_item->mainPropertyName()) {
        $values[] = $field_item->{$main_property_name};
      }
      else {
        // Default to using the 'value' property.
        $values[] = $field_item->value;
      }
    }
    // Ensure the field is handled based on its cardinality.
    if ($field_item_definition->getFieldStorageDefinition()->getCardinality() == 1) {
      // Single cardinality field should return a single value.
      return reset($values);
    }
    else {
      // Multi-value field handling.
      // Check if grouping is enabled or not.
      if ($this->options['group_rows'] === FALSE) {
        // If grouping is disabled, return individual values.
        return $values;
      }
      else {
        // If grouping is enabled, return the values as a concatenated string.
        return implode(', ', $values);
      }
    }
  }

This is the code and its working for me please review it.

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