put strong connectivity check in config.SHORTCIRCUIT_SIA.

[Astrocytes120]

As Will advised, I changed the code in order to work in the SHORTCIRCUIT_SIA. As a result, it works in the same way as before, but let an user know the reason why the subsystem is trivial.
If you have the other advice for trivial cases, please let me know it.

It works like this:
tpm = np.array(
[
[1, 0, 0],
[1, 0, 0],
[1, 0, 0],
[1, 0, 0],
[1, 0, 0],
[1, 0, 0],
[1, 1, 1],
[1, 1, 1],
]
)

cm = np.array([
[0,0,0],
[0,1,1],
[0,1,1],
])

labels= ["A", "B","C"]
state0= (1,1,1)

For all possible subsystems,
┌────────────────────────────────────────┐
│ NullSystemIrreducibilityAnalysis │
│ ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ │
│ Subsystem: A,B,C │
│ Φ: 0.0 │
│ CAUSE: (0,1,1) │
│ II_c: 1.0 │
│ EFFECT: (1,1,1) │
│ II_e: 2.0 │
│ Reasons: NOT_STRONGLY_CONNECTED │
└────────────────────────────────────────┘
Subsystem(B, C)
┌──────────────────────────────────┐
│ SystemIrreducibilityAnalysis │
│ ━━━━━━━━━━━━━━━━━━━━━━━ │
│ Subsystem: B,C │
│ Current state: (1,1) │
│ φ_s: 2.0 │
│ Normalized φ_s: 1.0 │
│ CAUSE: (1,1) │
│ II_c: 2.0 │
│ EFFECT: (1,1) │
│ II_e: 2.0 │
│ #(tied MIPs): 0 │
│ Partition: │
│ 2 parts: {B,C} │
│ [[0 1] │
│ [1 0]] │
└──────────────────────────────────┘

Subsystem(A)
┌─────────────────────────────────────┐
│ NullSystemIrreducibilityAnalysis │
│ ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ │
│ Subsystem: A │
│ Φ: 0.0 │
│ CAUSE: (0) │
│ II_c: 0.0 │
│ EFFECT: (0) │
│ II_e: 0.0 │
│ Reasons: NO_CAUSE, NO_EFFECT │
└─────────────────────────────────────┘