fix(ui): загрузка и общий контракт сравнения (refs #8 #7)

components/form.php

@@ -105,7 +105,7 @@ $basePickerAccept = 'image/jpeg,image/png,image/gif,image/webp,image/bmp,image/a
 		const uploadButtonDefaultLabel = uploadButtonLabel?.textContent || '';
 
 		function renderUploadButton() {
-			if (uploadButtonLabel) uploadButtonLabel.textContent = 'Загрузка' + '.'.repeat(uploadDots);
+			window.ZoomzillaUpload.renderLoadingLabel(uploadButtonLabel, uploadDots, <?= json_encode(Yii::t('app', 'Загрузка'), JSON_UNESCAPED_UNICODE) ?>);
 		}
 
 		function beginUploadPending() {
@@ -118,7 +118,7 @@ $basePickerAccept = 'image/jpeg,image/png,image/gif,image/webp,image/bmp,image/a
 				uploadButton.setAttribute('aria-busy', 'true');
 			}
 			uploadDotsTimer = window.setInterval(() => {
-				uploadDots = uploadDots === 5 ? 1 : uploadDots + 1;
+				uploadDots = (uploadDots + 1) % 6;
 				renderUploadButton();
 			}, 500);
 			return true;