chore: Add back repl test using bin/scala

Author: tgodzik

compiler/test/dotty/tools/scripting/BashExitCodeTests.scala

@@ -62,6 +62,9 @@ class BashExitCodeTests:
   @Test def xPluginList   = scala("-Xplugin-list")(0)
   @Test def vPhases       = scala("-Vphases")(0)
 
+  @Test def replEval      =
+    scala("--repl-quit-after-init", "--repl-init-script", "'val i = 2 * 2; val j = i + 2'")(0)
+
   /** A utility for running two commands in a row, like you do in bash. */
   extension (inline u1: Unit) inline def & (inline u2: Unit): Unit = { u1; u2 }
 end BashExitCodeTests