Inappropriate file formats are attached on the android phone

Invalid fb2 file format is attached only in android browsers.

my configs:
```
djsConfig = {
maxFilesize: 20,
maxThumbnailFilesize: 20,
acceptedFiles: 'application/pdf,application/vnd.openxmlformats-officedocument.wordprocessingml.document,application/msword,image/bmp,image/jpeg,image/png,image/gif',
dictRemoveFile: 'x',
addRemoveLinks: true,
autoProcessQueue: false,
autoQueue: false,
};
```

Start by reproducing the upload with an fb2 file in an Android browser using the shown djsConfig, then trace how acceptedFiles is validated in the React Dropzone integration. Done means fb2 files are rejected consistently on Android while the listed formats remain accepted.

Written by the indexing model from the issue text.