[2.x] fix: Fixes non-typelevel scalaOrganization (#8945)

**Problem**
Coursier used to support only org.typelevel as scalaOrganization override.

**Solution**
This uses the newly added parameter in M24.

lm-coursier/src/main/scala/lmcoursier/CoursierDependencyResolution.scala

@@ -7,7 +7,6 @@ import coursier.{ Organization, Resolution }
 import coursier.core.{ Classifier, Configuration, Dependency, VariantPublication, Publication }
 import coursier.cache.CacheDefaults
 import coursier.util.Artifact
-import coursier.internal.Typelevel
 import lmcoursier.definitions.ToCoursier
 import lmcoursier.internal.{
   ArtifactsParams,
@@ -151,10 +150,11 @@ class CoursierDependencyResolution(
         sys.error(s"unrecognized ModuleDescriptor type: $module")
     }
 
-    val so = conf.scalaOrganization
+    val soOpt = conf.scalaOrganization
       .map(Organization(_))
       .orElse(module0.scalaModuleInfo.map(m => Organization(m.scalaOrganization)))
-      .getOrElse(Organization("org.scala-lang"))
+
+    val so = soOpt.getOrElse(Organization("org.scala-lang"))
     val sv = conf.scalaVersion
       .orElse(module0.scalaModuleInfo.map(_.scalaFullVersion))
       // FIXME Manage to do stuff below without a scala version?
@@ -263,8 +263,6 @@ class CoursierDependencyResolution(
         (ToCoursier.configuration(config), extends0.map(ToCoursier.configuration))
       }
 
-    val typelevel = so == Typelevel.typelevelOrg
-
     val cache0 = coursier.cache
       .FileCache()
       .withLocation(cache)
@@ -303,7 +301,7 @@ class CoursierDependencyResolution(
               (ToCoursier.module(k), ToCoursier.versionConstraint(v))
             .toMap
         )
-        .withTypelevel(typelevel)
+        .withScalaOrganizationOverride(soOpt)
         .withReconciliation0(conf.reconciliation.map: (k, v) =>
           ToCoursier.moduleMatchers(k) -> ToCoursier.constraintReconciliation(v))
         .withExclusions(excludeDependencies)

sbt-app/src/sbt-test/dependency-management/scala-organization/build.sbt

@@ -0,0 +1,11 @@
+@transient
+lazy val check = taskKey[Unit]("check")
+
+scalaVersion := "3.8.3-RC1-bin-20260218-bb6fc60-NIGHTLY"
+scalaOrganization := "ch.epfl.lara"
+libraryDependencies += "com.lihaoyi" %% "fansi" % "0.5.0"
+check := {
+  val cp = (Compile / fullClasspath).value.map(_.data)
+  cp.foreach: x =>
+    assert(!x.toString.contains("org/scala-lang"), s"$x contains org/scala-lang")
+}

sbt-app/src/sbt-test/dependency-management/scala-organization/test

@@ -0,0 +1 @@
+> check