Downgrading default Scala version to match Ammonite is wrong with using directives

[Gedochao]

Version(s)
1.6.1

Describe the bug
When the default Scala version is not yet supported by the default Ammonite version, we automatically downgrade to a hardcoded version.
This, however, only works if the Scala version is passed to the REPL via a command line option.
Whatever is defined in a using directive gets ignored at the moment.

To Reproduce

scala-cli repl --amm --scala-snippet '//> using scala 3.3.4' --power
# Scala 3.6.3 is not yet supported with this version of Ammonite
# Defaulting to Scala 3.5.1
# Scala 3.6.3 is not yet supported with this version of Ammonite
# Defaulting to Scala 3.5.1
# Compiling project (Scala 3.5.1, JVM (23))
# Compiled project (Scala 3.5.1, JVM (23))
# Loading...
# Welcome to the Ammonite Repl 3.0.0-2-6342755f (Scala 3.5.1 Java 23.0.1)
# @  

Expected behaviour
Ammonite REPL should respect Scala version from using directives.