fix(FlagEvaluation): cast value instead of self in getTyped

[reginaldalfret]

Summary

Fixes a type check in FlagResolution.getTyped(value:defaultValue:) where self was being cast to T instead of the value parameter.

Problem

In Sources/Confidence/FlagEvaluation.swift, line 229 checked if let value = self as? T. Because self is a FlagResolution struct rather than a value type, this conditional cast could never succeed for any requested flag type (String, Int, Double, Bool), causing execution to fall through to the switch statement instead of executing the early return fast-path.

Solution

Update if let value = self as? T to if let value = value as? T to properly evaluate the value parameter.

Testing

• Verified source diff and compilation logic.

Fixes #252