fprime-seqgen passes but FSW crashes on empty seq

[zimri-leisher]

F´ Version	3.4.3
Affected Component	CmdSequencer, fprime-seqgen

---

Problem Description

1. Create an empty .seq file
2. Run fprime-seqgen on it

$ fprime-seqgen empty.seq -d <some dictionary>
Sequence is 0 bytes with timebase ANY
CRC: 4017330436 (0xEF739904)
$ echo $?
0

3. Run with CS_RUN:

Assert: "<path>/CmdSequencer/FPrimeSequence.cpp:97" 3
FATAL 14273 handled.

Context / Environment

Execute fprime-util version-check and share the output.

Operating System: Linux
CPU Architecture: x86_64
Platform: Linux-6.5.0-26-generic-x86_64-with-glibc2.35
Python version: 3.10.12
CMake version: 3.27.2
Pip version: 22.0.2
Pip packages:
    fprime-tools==3.4.4
    fprime-gds==3.4.3
    fprime-fpp-*==2.1.0a3

Expected Behavior

1. Either CmdSequencer should not assert, or fprime-seqgen should fail.