fix: set the classDirectory in scala3-library to the one in scala-library

Author: hamzaremmal

project/Build.scala

@@ -1251,6 +1251,8 @@ object Build {
       Test / doc     := (`scala-library-nonbootstrapped` / Test / doc).value,
       Test / run     := (`scala-library-nonbootstrapped` / Test / run).evaluated,
       Test / test    := (`scala-library-nonbootstrapped` / Test / test).value,
+      // Claim that the classes generated by this project are the same as the one we get from `scala-library-nonbootstrapped`
+      Compile / classDirectory := (`scala-library-nonbootstrapped` / Compile / classDirectory).value,
       // Packaging configuration of the stdlib
       Compile / packageBin / publishArtifact := true,
       Compile / packageDoc / publishArtifact := false,
@@ -1371,6 +1373,8 @@ object Build {
       Test / compile := (`scala-library-bootstrapped` / Test / compile).value,
       Test / doc     := (`scala-library-bootstrapped` / Test / doc).value,
       Test / run     := (`scala-library-bootstrapped` / Test / run).evaluated,
+      // Claim that the classes generated by this project are the same as the one we get from `scala-library-bootstrapped`
+      Compile / classDirectory := (`scala-library-bootstrapped` / Compile / classDirectory).value,
       // Packaging configuration of the stdlib
       Compile / packageBin / publishArtifact := true,
       Compile / packageDoc / publishArtifact := false,