Dont store type refinement mode in analysis flags

Instead, check the refiner from the DI-container or refiner from
capability of a module descriptor.

The reason is because in the IDE there might be multiple
ResolutionFacades (-> multiple DI-containers -> multiple module
descriptors) for one and the same IDE module, with different refinement
settings.
However, due to how the code is written, it's hard to have
different LanguageVersionSettings for one and the same module.

After this commit the refinement settings are determined by the
moduleDescriptor capabilities, which is much easier to tweak

See usage of that change in Kotlin IDE Plugin (commit is linked to the
YT issue)

^KTIJ-20775

compiler/config/src/org/jetbrains/kotlin/config/AnalysisFlags.kt

@@ -36,9 +36,6 @@ object AnalysisFlags {
     @JvmStatic
     val constraintSystemForOverloadResolution by AnalysisFlag.Delegates.ConstraintSystemForOverloadResolution
 
-    @JvmStatic
-    val useTypeRefinement by AnalysisFlag.Delegates.Boolean
-
     @JvmStatic
     val ideMode by AnalysisFlag.Delegates.Boolean
 

compiler/config/src/org/jetbrains/kotlin/config/CommonConfigurationKeys.kt

@@ -76,8 +76,5 @@ var CompilerConfiguration.languageVersionSettings: LanguageVersionSettings
     get() = get(CommonConfigurationKeys.LANGUAGE_VERSION_SETTINGS, LanguageVersionSettingsImpl.DEFAULT)
     set(value) = put(CommonConfigurationKeys.LANGUAGE_VERSION_SETTINGS, value)
 
-val LanguageVersionSettings.isTypeRefinementEnabled: Boolean
-    get() = getFlag(AnalysisFlags.useTypeRefinement)
-
 val LanguageVersionSettings.isLibraryToSourceAnalysisEnabled: Boolean
     get() = getFlag(AnalysisFlags.libraryToSourceAnalysis)

compiler/frontend/src/org/jetbrains/kotlin/frontend/di/injection.kt

@@ -18,7 +18,6 @@ package org.jetbrains.kotlin.frontend.di
 
 import org.jetbrains.kotlin.cfg.ControlFlowInformationProvider
 import org.jetbrains.kotlin.config.LanguageVersionSettings
-import org.jetbrains.kotlin.config.isTypeRefinementEnabled
 import org.jetbrains.kotlin.container.StorageComponentContainer
 import org.jetbrains.kotlin.container.useImpl
 import org.jetbrains.kotlin.container.useInstance
@@ -40,6 +39,7 @@ import org.jetbrains.kotlin.resolve.calls.smartcasts.DataFlowValueFactoryImpl
 import org.jetbrains.kotlin.resolve.calls.tower.KotlinResolutionStatelessCallbacksImpl
 import org.jetbrains.kotlin.resolve.checkers.ExpectedActualDeclarationChecker
 import org.jetbrains.kotlin.resolve.checkers.ExperimentalUsageChecker
+import org.jetbrains.kotlin.resolve.descriptorUtil.isTypeRefinementEnabled
 import org.jetbrains.kotlin.resolve.lazy.*
 import org.jetbrains.kotlin.resolve.lazy.declarations.DeclarationProviderFactory
 import org.jetbrains.kotlin.types.KotlinTypeRefinerImpl
@@ -88,7 +88,7 @@ fun StorageComponentContainer.configureModule(
 
     useImpl<NewKotlinTypeCheckerImpl>()
 
-    if (languageVersionSettings.isTypeRefinementEnabled) {
+    if (moduleContext.module.isTypeRefinementEnabled()) {
         useImpl<KotlinTypeRefinerImpl>()
     } else {
         useInstance(KotlinTypeRefiner.Default)

js/js.frontend/src/org/jetbrains/kotlin/js/resolve/diagnostics/JsNameClashChecker.kt

@@ -17,7 +17,6 @@
 package org.jetbrains.kotlin.js.resolve.diagnostics
 
 import org.jetbrains.kotlin.config.LanguageVersionSettings
-import org.jetbrains.kotlin.config.isTypeRefinementEnabled
 import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.diagnostics.DiagnosticSink
 import org.jetbrains.kotlin.diagnostics.Errors
@@ -119,7 +118,7 @@ class JsNameClashChecker(
         existing: CallableMemberDescriptor,
         overrideDescriptor: CallableMemberDescriptor
     ): Boolean {
-        return if (!languageVersionSettings.isTypeRefinementEnabled) {
+        return if (kotlinTypeRefiner === KotlinTypeRefiner.Default) {
             // Fast-path
             existing == overrideDescriptor
         } else {