JVM_IR: add $delegate methods to a few exclusion lists

1. they don't need type annotations;
 2. internal ones include the module name before the `$delegate` part,
    so further mangling is redundant
 3. they don't need multifile facade bridges.

Unlike `$annotations`, delegated properties don't appear in interfaces,
so exclusions in InterfaceLowering would be redundant.

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/codegen/FunctionCodegen.kt

@@ -135,8 +135,6 @@ class FunctionCodegen(private val irFunction: IrFunction, private val classCodeg
             irFunction.origin == JvmLoweredDeclarationOrigin.SYNTHETIC_METHOD_FOR_PROPERTY_OR_TYPEALIAS_ANNOTATIONS ->
                 false
             irFunction is IrConstructor && irFunction.parentAsClass.shouldNotGenerateConstructorParameterAnnotations() ->
-                // Not generating parameter annotations for default stubs fixes KT-7892, though
-                // this certainly looks like a workaround for a javac bug.
                 false
             else ->
                 true
@@ -310,6 +308,8 @@ class FunctionCodegen(private val irFunction: IrFunction, private val classCodeg
     companion object {
         internal val methodOriginsWithoutAnnotations =
             setOf(
+                // Not generating parameter annotations for default stubs fixes KT-7892, though
+                // this certainly looks like a workaround for a javac bug.
                 IrDeclarationOrigin.FUNCTION_FOR_DEFAULT_PARAMETER,
                 JvmLoweredDeclarationOrigin.SYNTHETIC_ACCESSOR,
                 IrDeclarationOrigin.ENUM_CLASS_SPECIAL_MEMBER,
@@ -319,6 +319,7 @@ class FunctionCodegen(private val irFunction: IrFunction, private val classCodeg
                 JvmLoweredDeclarationOrigin.ABSTRACT_BRIDGE_STUB,
                 JvmLoweredDeclarationOrigin.TO_ARRAY,
                 IrDeclarationOrigin.IR_BUILTINS_STUB,
+                IrDeclarationOrigin.PROPERTY_DELEGATE,
             )
     }
 }

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/codegen/MethodSignatureMapper.kt

@@ -132,6 +132,7 @@ class MethodSignatureMapper(private val context: JvmBackendContext) {
         if (visibility == DescriptorVisibilities.INTERNAL &&
             origin != JvmLoweredDeclarationOrigin.STATIC_INLINE_CLASS_CONSTRUCTOR &&
             origin != JvmLoweredDeclarationOrigin.SYNTHETIC_METHOD_FOR_PROPERTY_OR_TYPEALIAS_ANNOTATIONS &&
+            origin != IrDeclarationOrigin.PROPERTY_DELEGATE &&
             !isPublishedApi()
         ) {
             return originalFunction.takeIf { it != this }

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/lower/GenerateMultifileFacades.kt

@@ -239,6 +239,7 @@ private fun IrSimpleFunction.createMultifileDelegateIfNeeded(
         name == StaticInitializersLowering.clinitName ||
         origin == JvmLoweredDeclarationOrigin.SYNTHETIC_ACCESSOR ||
         origin == IrDeclarationOrigin.LOCAL_FUNCTION_FOR_LAMBDA ||
+        origin == IrDeclarationOrigin.PROPERTY_DELEGATE ||
         // $annotations methods in the facade are only needed for const properties.
         (origin == JvmLoweredDeclarationOrigin.SYNTHETIC_METHOD_FOR_PROPERTY_OR_TYPEALIAS_ANNOTATIONS &&
                 (metadata as? MetadataSource.Property)?.isConst != true)