Fix presentation compiler

Author: tanishiking

compiler/src/dotty/tools/dotc/semanticdb/ExtractSemanticDB.scala

@@ -198,7 +198,7 @@ object ExtractSemanticDB:
       .resolveSibling(source.name + ".semanticdb")
 
   /** Extractor of symbol occurrences from trees */
-  private class Extractor extends TreeTraverser:
+  class Extractor extends TreeTraverser:
     import Scala3.{_, given}
     given s.SemanticSymbolBuilder = s.SemanticSymbolBuilder()
     val synth = SyntheticsExtractor()

presentation-compiler/src/main/dotty/tools/pc/SemanticdbTextDocumentProvider.scala

@@ -32,8 +32,7 @@ class SemanticdbTextDocumentProvider(
       SourceFile.virtual(filePath.toString, validCode)
     )
     val tree = driver.currentCtx.run.units.head.tpdTree
-    val extract = ExtractSemanticDB()
-    val extractor = extract.Extractor()
+    val extractor = ExtractSemanticDB.Extractor()
     extractor.traverse(tree)(using driver.currentCtx)
     val path = workspace
       .flatMap { workspacePath =>