from-env provider: potential panic when comparing evalCtx values

[sahidvelji]

While changing interface{} to any is a great modernization step, there's a potential pre-existing issue in this function's implementation. The comparison val != criteria.Value on line 37 can cause a panic if the values from the evaluation context or the flag definition are complex types like slices or maps, which are not comparable in Go. Using reflect.DeepEqual for this comparison would be safer and prevent potential panics. For example: if !ok || !reflect.DeepEqual(val, criteria.Value). Since the function body is not part of this diff, I'm noting this here for future improvement.

Originally posted by @gemini-code-assist[bot] in #754 (comment)