fix(launch): prevent freeze on many log messages

The 1.88 preview added lots of useful log messages. However, these were
filling the output buffer when running `nasher test` or `nasher play`,
causing the game to freeze. Redirecting the logging to nasher's output
fixes the issue. However, this does result in lots of logging messages
going to nasher, which may be undesirable.

src/nasher/launch.nim

@@ -47,7 +47,7 @@ proc launch*(opts: Options, target: Target) =
 
   var
     path, args: string
-    options = {poStdErrToStdOut}
+    options = {poStdErrToStdOut, poParentStreams}
 
   case cmd
   of "play":
@@ -59,7 +59,6 @@ proc launch*(opts: Options, target: Target) =
   of "serve":
     path = opts.get("serverBin", getServerBin())
     args = "-module"
-    options.incl(poParentStreams)
   else:
     assert false