Popup: Add !onlyChildProcessing check for hiding

Author: Ruslan Farkhutdinov

packages/devextreme/js/__internal/ui/popup/m_popup.ts

@@ -237,6 +237,7 @@ class Popup<
     if (this._$content && !$target.is(this._$content)
         && options.keyName === ESC_KEY_NAME
         && !e.isDefaultPrevented()
+        && !onlyChildProcessing
         && !_ignoreCloseOnChildEscape) {
       // eslint-disable-next-line @typescript-eslint/no-floating-promises
       this.hide();