BUG: MAJORITY scorer explanation describes a tie as a strict false majority #3900

Describe the bug

The MAJORITY true/false aggregator correctly returns False for a tie, but describes the tied result as a strict majority of constituent scorers not returning True. The wording overstates the evidence. Keep the existing verdict and change only the explanation.

Source: pyrit/score/true_false/true_false_score_aggregator.py:198-207,233-238 at the tested revision.

Steps/Code to Reproduce

from pyrit.models import ComponentIdentifier, Score
from pyrit.score.true_false.true_false_score_aggregator import TrueFalseScoreAggregator

identifier = ComponentIdentifier(class_name="ProbeScorer", class_module="probe")
result = TrueFalseScoreAggregator.MAJORITY([
    Score(score_type="true_false", score_value=value, scorer_class_identifier=identifier)
    for value in ("true", "false")
])
print(result.value)
print(result.description)

Expected Results

Return False and explain that a strict majority returning True was not reached, or distinguish a tie explicitly. Add description assertions for tied votes and actual true/false majorities.

Actual Results

False
A strict majority of constituent scorers did not return True in a MAJORITY composite scorer.

The same false explanation is used for [False, False, True], where a strict false majority actually exists. This is a wording issue only, not an incorrect aggregate verdict.

Screenshots

N/A.

Versions

Linux; Python 3.12.3; PyRIT 1.2.0.dev0 at 01ce6ca66a315770b36c7dca1f320668c0d92d7c. Actual models/aggregator in a standalone probe; no inference or persistence. Full package-version output was not collected.