SAFE_POINT is triggered if "Read Alignment" WD element reads a sanger alignment

Scenario:

1. Open the WD.
2. Add the "Read Alignment" element to the scene.
3. Set "_common_data/sanger/alignment.ugenedb" file as input.
4. Launch the workflow.
   Expected state: the reader hasn't produced any messages.
   Current state: the reader has tried to open the Sanger reads alignment as multiple sequence alignment and fails on a SAFE_POINT:

   [ERROR][12:53] Trying to recover from error: The alignment alphabet is NULL during importing! at src/util/MultipleSequenceAlignmentImporter.cpp:107
   [ERROR][12:53] Trying to recover from error: Failed to get trackMod! at src/sqlite_dbi/SQLiteObjectDbi.cpp:1090
   [ERROR][12:53] Object not found!