ENGCOM-8234: Fix #30073 - Store specific text swatch attribute option label with v… #30114

 - Merge Pull Request #30114 from Bartlomiejsz/magento2:bugfix/30073_store_specific_text_swatch_values
 - Merged commits:
   1. 080a349
   2. aaab946
   3. d552d80
   4. 7bdac1b
   5. 57ba467
   6. 6bc7a61
   7. 3b24955
   8. 4fccb0c

Author: magento-engcom-team

app/code/Magento/Swatches/Model/Plugin/EavAttribute.php

@@ -352,7 +352,7 @@ protected function processTextualSwatch(Attribute $attribute)
                 }
                 $defaultSwatchValue = reset($storeValues);
                 foreach ($storeValues as $storeId => $value) {
-                    if (!$value) {
+                    if ($value === null || $value === '') {
                         $value = $defaultSwatchValue;
                     }
                     $swatch = $this->loadSwatchIfExists($optionId, $storeId);
@@ -378,8 +378,9 @@ protected function processTextualSwatch(Attribute $attribute)
      */
     protected function getAttributeOptionId($optionId)
     {
-        if (substr($optionId, 0, 6) == self::BASE_OPTION_TITLE || substr($optionId, 0, 3) == self::API_OPTION_PREFIX) {
-            $optionId = isset($this->dependencyArray[$optionId]) ? $this->dependencyArray[$optionId] : null;
+        if (strpos((string)$optionId, self::BASE_OPTION_TITLE) === 0 ||
+            strpos((string)$optionId, self::API_OPTION_PREFIX) === 0) {
+            $optionId = $this->dependencyArray[$optionId] ?? null;
         }
         return $optionId;
     }