script compiler options can cause warnings when starting REPL

[philwalk]

Compiler version

    Scala compiler version 3.0.0-M4-bin-SNAPSHOT-git-668e9a5 -- Copyright 2002-2021, LAMP/EPFL

Minimized code

The -save option should not also pass to the REPL:

SCALA_OPTS="-save" scala

Output

$ SCALA_OPTS="-save" bin/scala
Starting scala3 REPL...
bad option '-save' was ignored

Expectation

-save and -compile-only options should only be seen by scripting

[philwalk]

will push a fix to a PR fork soon ..