accept null in numberFormat (x-tools#604)

Author: agoujot

src/Helper/I18nHelper.php

@@ -189,11 +189,11 @@ public function msgIfExists( ?string $message, array $vars = [] ): string {
 
 	/**
 	 * Format a number based on language settings.
-	 * @param int|float $number
+	 * @param int|float|null $number
 	 * @param int $decimals Number of decimals to format to.
 	 * @return string
 	 */
-	public function numberFormat( int|float $number, int $decimals = 0 ): string {
+	public function numberFormat( int|float|null $number, int $decimals = 0 ): string {
 		$lang = $this->getLangForTranslatingNumerals();
 		if ( !isset( $this->numFormatter ) ) {
 			$this->numFormatter = new NumberFormatter( $lang, NumberFormatter::DECIMAL );

src/Twig/AppExtension.php

@@ -446,11 +446,11 @@ public function getFilters(): array {
 
 	/**
 	 * Format a number based on language settings.
-	 * @param int|float $number
+	 * @param int|float|null $number
 	 * @param int $decimals Number of decimals to format to.
 	 * @return string
 	 */
-	public function numberFormat( int|float $number, int $decimals = 0 ): string {
+	public function numberFormat( int|float|null $number, int $decimals = 0 ): string {
 		return $this->i18n->numberFormat( $number, $decimals );
 	}