Issue: Text-based file format readers fail to handle end-of-file correctly

Issue: Text-based file format readers fail to handle end-of-file correctly: a task in LegoFlow-SWE (Harbor dataset). Description After a recent update to the underlying file reading mechanism, text-based format readers (e.g., SDF, GRO, XYZ) no longer detect end-of-file (EOF) properly. Previously…

The task

**Description** After a recent update to the underlying file reading mechanism, text-based format readers (e.g., SDF, GRO, XYZ) no longer detect end-of-file (EOF) properly. Previously, when the reader reached the end of a file it would trigger an error condition that allowed the reading loop to terminate gracefully.…

Part of Lego-X/LegoFlow-SWE.