Fix modifier order in generated overriden functions

Fixes #KT-21600

compiler/testData/diagnostics/tests/inference/implicitInvokeExtensionWithFunctionalArgument.txt

@@ -1,7 +1,7 @@
 package
 
 public fun test(/*0*/ s: SelectorFor<State>): kotlin.Double
-public operator inline fun </*0*/ S, /*1*/ I> SelectorFor<S>.invoke(/*0*/ f: S.() -> I): AbstractSelector<S, I>
+public inline operator fun </*0*/ S, /*1*/ I> SelectorFor<S>.invoke(/*0*/ f: S.() -> I): AbstractSelector<S, I>
 
 public final class AbstractSelector</*0*/ S, /*1*/ I> {
     public constructor AbstractSelector</*0*/ S, /*1*/ I>()

compiler/testData/diagnostics/tests/inference/implicitInvokeInCompanionObjectWithFunctionalArgument.txt

@@ -12,7 +12,7 @@ public final class TestClass {
         private constructor Companion()
         public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
         public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
-        public final operator inline fun </*0*/ T> invoke(/*0*/ task: () -> T): T
+        public final inline operator fun </*0*/ T> invoke(/*0*/ task: () -> T): T
         public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
     }
 }

compiler/testData/diagnostics/tests/inference/implicitInvokeInObjectWithFunctionalArgument.txt

@@ -6,6 +6,6 @@ public object TestClass {
     private constructor TestClass()
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
-    public final operator inline fun </*0*/ T> invoke(/*0*/ task: () -> T): T
+    public final inline operator fun </*0*/ T> invoke(/*0*/ task: () -> T): T
     public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
 }

compiler/testData/diagnostics/tests/inference/implicitInvokeWithFunctionLiteralArgument.txt

@@ -21,6 +21,6 @@ public final class TestClass {
     public constructor TestClass()
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
-    public final operator inline fun </*0*/ T> invoke(/*0*/ task: () -> T): T
+    public final inline operator fun </*0*/ T> invoke(/*0*/ task: () -> T): T
     public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
 }