[FIR] Unify FirLibrarySession and FirJavaModuleBasedSession into single FirCliSession

compiler/fir/entrypoint/src/org/jetbrains/kotlin/fir/session/FirSessionFactory.kt

@@ -77,8 +77,8 @@ object FirSessionFactory {
         languageVersionSettings: LanguageVersionSettings = LanguageVersionSettingsImpl.DEFAULT,
         lookupTracker: LookupTracker? = null,
         init: FirSessionConfigurator.() -> Unit = {}
-    ): FirJavaModuleBasedSession {
-        return FirJavaModuleBasedSession(sessionProvider).apply session@{
+    ): FirSession {
+        return FirCliSession(sessionProvider, FirCliSession.Kind.Source).apply session@{
             val moduleData = FirModuleInfoBasedModuleData(moduleInfo).apply { bindSession(this@session) }
             registerModuleData(moduleData)
             registerCliCompilerOnlyComponents()
@@ -136,8 +136,8 @@ object FirSessionFactory {
         project: Project,
         packagePartProvider: PackagePartProvider,
         languageVersionSettings: LanguageVersionSettings = LanguageVersionSettingsImpl.DEFAULT,
-    ): FirLibrarySession {
-        return FirLibrarySession(sessionProvider).apply session@{
+    ): FirSession {
+        return FirCliSession(sessionProvider, FirCliSession.Kind.Library).apply session@{
             val moduleData = FirModuleInfoBasedModuleData(moduleInfo).apply { bindSession(this@session) }
             sessionProvider.registerSession(moduleData, this)
             registerCliCompilerOnlyComponents()

compiler/fir/java/src/org/jetbrains/kotlin/fir/java/FirCliSession.kt

@@ -8,16 +8,16 @@ package org.jetbrains.kotlin.fir.java
 import org.jetbrains.kotlin.fir.*
 
 @OptIn(PrivateSessionConstructor::class)
-class FirJavaModuleBasedSession @PrivateSessionConstructor constructor(
+class FirCliSession @PrivateSessionConstructor constructor(
     sessionProvider: FirProjectSessionProvider,
-) : FirModuleBasedSession(sessionProvider)
+    val kind: Kind // used for debug
+) : FirSession(sessionProvider) {
+    enum class Kind {
+        Source, Library
+    }
+}
 
-@OptIn(PrivateSessionConstructor::class)
-class FirLibrarySession @PrivateSessionConstructor constructor(
-    sessionProvider: FirProjectSessionProvider
-) : FirSession(sessionProvider)
-
-open class FirProjectSessionProvider : FirSessionProvider() {
+class FirProjectSessionProvider : FirSessionProvider() {
     override fun getSession(moduleData: FirModuleData): FirSession? {
         return sessionCache[moduleData]
     }
@@ -26,5 +26,5 @@ open class FirProjectSessionProvider : FirSessionProvider() {
         sessionCache[moduleData] = session
     }
 
-    protected open val sessionCache: MutableMap<FirModuleData, FirSession> = mutableMapOf()
+    private val sessionCache: MutableMap<FirModuleData, FirSession> = mutableMapOf()
 }

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/FirModuleBasedSession.kt

@@ -1,11 +0,0 @@
-/*
- * Copyright 2010-2018 JetBrains s.r.o. and Kotlin Programming Language contributors.
- * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
- */
-
-package org.jetbrains.kotlin.fir
-
-@OptIn(PrivateSessionConstructor::class)
-abstract class FirModuleBasedSession @PrivateSessionConstructor constructor(
-    sessionProvider: FirSessionProvider?
-) : FirSession(sessionProvider)