* Explicitly log invalid symptom data.

* Unless the symptom flow is successfully completed, we assume Symptoms.NO_INFORMATION.
The information is based from one fragment to the next.
The stored symptom data is only updated if the last fragment successfully completes.

* Unit test for symptom indication.

* Update Corona-Warn-App/src/main/java/de/rki/coronawarnapp/ui/submission/symptoms/calendar/SubmissionSymptomCalendarViewModel.kt

Co-authored-by: chris-cwa <69595386+chris-cwa@users.noreply.github.com>

* Update Corona-Warn-App/src/main/java/de/rki/coronawarnapp/submission/TransmissionRiskVectorDeterminator.kt

Co-authored-by: chris-cwa <69595386+chris-cwa@users.noreply.github.com>

* fixed super-fatal code formatting

Co-authored-by: chris-cwa <69595386+chris-cwa@users.noreply.github.com>
Co-authored-by: Ralf Gehrer <ralfgehrer@users.noreply.github.com>
Co-authored-by: chris-cwa <chris.cwa.sap@gmail.com>