Cannot open .docx or .xlsx files in Google office through Nexcloud App on Android

### Steps to reproduce
1. Open Nextcloud App on Android
2. Browse files
3. Click on a Word or Excel file (.docx or .xlsx)
4. Wait for the file being synced
5. Authorize Google Docs/Sheets to access the file (first use only)

### Expected behaviour
The .docx/.xlsx file should open in Google Docs/Sheets.

### Actual behaviour
Google Docs/Sheets displays an error message: (translated) "Cannot open the document. The file is not available offline. Select option Available offline in the file menu to be able to access it even if you are not connected to internet."
However, other document formats such as .odt for example are correctly opened in Google office.
Moreover, it is possible to open the .docx/.xlsx document directly in Android file explorer > Android > media > com.nextcloud.client > nextcloud > username@domain.com > nextcloud_path_to_file.

### Environment data
Android version: 10

Device model: Huawei P Smart 2019

Stock or customized system: EMUI 10.0.0

Nextcloud app version: 3.12.0

Nextcloud server version: 18.0.6

Reverse proxy: none