Fix Feature reference after rebase

Author: nicolasstucki

compiler/src/dotty/tools/dotc/typer/Checking.scala

@@ -746,20 +746,23 @@ object Checking {
         EmptyTree
 
     for case imp @ Import(qual, selectors) <- trees do
+      def isAllowedImport(sel: untpd.ImportSelector) =
+        val name = Feature.experimental(sel.name)
+        name == Feature.scala2macros || name == Feature.erasedDefinitions
+
       languageImport(qual) match
         case Some(nme.experimental)
-        if !ctx.owner.isInExperimentalScope
-            && selectors.exists(sel => experimental(sel.name) != scala2macros && experimental(sel.name) != erasedDefinitions) =>
+        if !ctx.owner.isInExperimentalScope1 && !selectors.forall(isAllowedImport) =>
           def check(stable: => String) =
-            checkExperimentalFeature("features", imp.srcPos,
+            Feature.checkExperimentalFeature("features", imp.srcPos,
               s"\n\nNote: the scope enclosing the import is not considered experimental because it contains the\nnon-experimental $stable")
           if ctx.owner.is(Package) then
             // allow top-level experimental imports if all definitions are @experimental
             nonExperimentalStat(trees) match
               case EmptyTree =>
               case tree: MemberDef => check(i"${tree.symbol}")
               case tree => check(i"expression ${tree}")
-          else checkExperimentalFeature("features", imp.srcPos)
+          else Feature.checkExperimentalFeature("features", imp.srcPos)
         case _ =>
   end checkExperimentalImports
 }