No license text in /notices response for SPDX licenses with exceptions

REST API /notice returns only license name instead of full license text.
E.g. for org.openjfx/javafx-base/11.0.2

`curl -X POST "https://api.clearlydefined.io/notices" -H "accept: application/json" -H "Content-Type: application/json" -d "{\"coordinates\":[\"maven/mavencentral/org.openjfx/javafx-base/11.0.2\"],\"options\":{}}"`

```
{
"content": "** org.openjfx/javafx-base; version 11.0.2 -- \n\nGPL-2.0-only WITH Classpath-exception-2.0",
"summary": {
"total": 1,
"warnings": {
"noDefinition": [],
"noLicense": [],
"noCopyright": [
"maven/mavencentral/org.openjfx/javafx-base/11.0.2"
]
}
}
}
```

So it has a license **GPL-2.0-only WITH Classpath-exception-2.0** which is SPDX expression for an exception.
I checked the code and it seems that **spdx-license-list** library which is used to retrieve license text actually doesn't support SPDX expression so is not able to return the text.