[IR] Mark methods with descriptors of ReferenceSymbolTable with @ObsoleteDescriptorBasedAPI

Also remove optIn annotation from IrPluginContext.symbolTable

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/JsCommonBackendContext.kt

@@ -14,6 +14,7 @@ import org.jetbrains.kotlin.descriptors.ModuleDescriptor
 import org.jetbrains.kotlin.descriptors.PropertyDescriptor
 import org.jetbrains.kotlin.descriptors.SimpleFunctionDescriptor
 import org.jetbrains.kotlin.incremental.components.NoLookupLocation
+import org.jetbrains.kotlin.ir.ObsoleteDescriptorBasedAPI
 import org.jetbrains.kotlin.ir.backend.js.utils.isDispatchReceiver
 import org.jetbrains.kotlin.ir.declarations.*
 import org.jetbrains.kotlin.ir.symbols.IrSimpleFunctionSymbol
@@ -51,6 +52,7 @@ interface JsCommonBackendContext : CommonBackendContext {
 // TODO: investigate if it could be removed
 internal fun <T> BackendContext.lazy2(fn: () -> T) = lazy { irFactory.stageController.withInitialIr(fn) }
 
+@OptIn(ObsoleteDescriptorBasedAPI::class)
 class JsCommonCoroutineSymbols(
     symbolTable: SymbolTable,
     val module: ModuleDescriptor,

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/JsIntrinsics.kt

@@ -7,6 +7,7 @@ package org.jetbrains.kotlin.ir.backend.js
 
 import org.jetbrains.kotlin.builtins.PrimitiveType
 import org.jetbrains.kotlin.ir.IrBuiltIns
+import org.jetbrains.kotlin.ir.ObsoleteDescriptorBasedAPI
 import org.jetbrains.kotlin.ir.backend.js.utils.getJsName
 import org.jetbrains.kotlin.ir.declarations.IrFunction
 import org.jetbrains.kotlin.ir.declarations.IrProperty
@@ -24,6 +25,7 @@ import org.jetbrains.kotlin.psi2ir.findSingleFunction
 import org.jetbrains.kotlin.util.capitalizeDecapitalize.toLowerCaseAsciiOnly
 import java.util.*
 
+@OptIn(ObsoleteDescriptorBasedAPI::class)
 class JsIntrinsics(private val irBuiltIns: IrBuiltIns, val context: JsIrBackendContext) {
 
     // TODO: Should we drop operator intrinsics in favor of IrDynamicOperatorExpression?

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/JsIrBackendContext.kt

@@ -16,6 +16,7 @@ import org.jetbrains.kotlin.descriptors.SimpleFunctionDescriptor
 import org.jetbrains.kotlin.incremental.components.NoLookupLocation
 import org.jetbrains.kotlin.ir.IrBuiltIns
 import org.jetbrains.kotlin.ir.IrElement
+import org.jetbrains.kotlin.ir.ObsoleteDescriptorBasedAPI
 import org.jetbrains.kotlin.ir.UNDEFINED_OFFSET
 import org.jetbrains.kotlin.ir.backend.js.codegen.JsGenerationGranularity
 import org.jetbrains.kotlin.ir.backend.js.ir.JsIrBuilder
@@ -56,6 +57,7 @@ enum class IcCompatibleIr2Js(val isCompatible: Boolean, val incrementalCacheEnab
     IC_MODE(true, true)
 }
 
+@OptIn(ObsoleteDescriptorBasedAPI::class)
 class JsIrBackendContext(
     val module: ModuleDescriptor,
     override val irBuiltIns: IrBuiltIns,

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/lower/calls/ExceptionHelperCallsTransformer.kt

@@ -5,6 +5,7 @@
 
 package org.jetbrains.kotlin.ir.backend.js.lower.calls
 
+import org.jetbrains.kotlin.ir.ObsoleteDescriptorBasedAPI
 import org.jetbrains.kotlin.ir.backend.js.JsIrBackendContext
 import org.jetbrains.kotlin.ir.expressions.IrFunctionAccessExpression
 import org.jetbrains.kotlin.ir.util.irCall
@@ -15,6 +16,7 @@ import org.jetbrains.kotlin.name.Name
 class ExceptionHelperCallsTransformer(private val context: JsIrBackendContext) : CallsTransformer {
 
     // TODO: move symbol resolve into context
+    @OptIn(ObsoleteDescriptorBasedAPI::class)
     private fun referenceFunction(fqn: FqName) =
         context.getFunctions(fqn).singleOrNull()?.let {
             context.symbolTable.referenceSimpleFunction(it)