[BUGFIX] Correct type annotation for ValueList components (#826)

The `Color` class uses this property (`aComponents`) as an associative array.
Therefore all related type annotations need `array-key` rather than `int`
for the array key type.

Co-authored-by: Jake Hotson <[email protected]>

Author: JakeQZ

src/Value/CSSFunction.php

@@ -20,7 +20,7 @@ class CSSFunction extends ValueList
 
     /**
      * @param string $sName
-     * @param RuleValueList|array<int, Value|string> $aArguments
+     * @param RuleValueList|array<array-key, Value|string> $aArguments
      * @param string $sSeparator
      * @param int $iLineNo
      */
@@ -91,7 +91,7 @@ public function setName($sName): void
     }
 
     /**
-     * @return array<int, Value|string>
+     * @return array<array-key, Value|string>
      */
     public function getArguments()
     {

src/Value/Color.php

@@ -16,7 +16,7 @@
 class Color extends CSSFunction
 {
     /**
-     * @param array<int, Value|string> $colorValues
+     * @param array<array-key, Value|string> $colorValues
      * @param int $lineNumber
      */
     public function __construct(array $colorValues, $lineNumber = 0)
@@ -193,15 +193,15 @@ private static function mapRange(float $value, float $fromMin, float $fromMax, f
     }
 
     /**
-     * @return array<int, Value|string>
+     * @return array<array-key, Value|string>
      */
     public function getColor()
     {
         return $this->aComponents;
     }
 
     /**
-     * @param array<int, Value|string> $colorValues
+     * @param array<array-key, Value|string> $colorValues
      */
     public function setColor(array $colorValues): void
     {

src/Value/ValueList.php

@@ -15,7 +15,7 @@
 abstract class ValueList extends Value
 {
     /**
-     * @var array<int, Value|string>
+     * @var array<array-key, Value|string>
      */
     protected $aComponents;
 
@@ -25,7 +25,7 @@ abstract class ValueList extends Value
     protected $sSeparator;
 
     /**
-     * @param array<int, Value|string>|Value|string $aComponents
+     * @param array<array-key, Value|string>|Value|string $aComponents
      * @param string $sSeparator
      * @param int $iLineNo
      */
@@ -48,15 +48,15 @@ public function addListComponent($mComponent): void
     }
 
     /**
-     * @return array<int, Value|string>
+     * @return array<array-key, Value|string>
      */
     public function getListComponents()
     {
         return $this->aComponents;
     }
 
     /**
-     * @param array<int, Value|string> $aComponents
+     * @param array<array-key, Value|string> $aComponents
      */
     public function setListComponents(array $aComponents): void
     {