[FIR] Generate signatures for synthesized class delegation fields

This is to align the behavior with K1.

^KT-57754 Fixed

Co-authored-by: Alexander Udalov <alexander.udalov@jetbrains.com>

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/signaturer/FirBasedSignatureComposer.kt

@@ -95,7 +95,6 @@ class FirBasedSignatureComposer(override val mangler: FirMangler) : Fir2IrSignat
         if (declaration is FirRegularClass && declaration.classId.isLocal) return null
         if (declaration is FirCallableDeclaration) {
             if (declaration.visibility == Visibilities.Local) return null
-            if (declaration is FirField && declaration.source?.kind == KtFakeSourceElementKind.ClassDelegationField) return null
             if (declaration.dispatchReceiverClassLookupTagOrNull()?.classId?.isLocal == true || containingClass?.classId?.isLocal == true) return null
         }
 

compiler/testData/ir/irText/classes/delegatedImplementation.kt

@@ -1,6 +1,3 @@
-// MUTE_SIGNATURE_COMPARISON_K2: ANY
-// ^ KT-57754
-
 interface IBase {
     fun foo(x: Int, s: String)
     fun bar(): Int

compiler/testData/ir/irText/classes/delegatedImplementationWithExplicitOverride.kt

@@ -1,6 +1,3 @@
-// MUTE_SIGNATURE_COMPARISON_K2: ANY
-// ^ KT-57754
-
 interface IFooBar {
     fun foo()
     fun bar()

compiler/testData/ir/irText/declarations/annotations/inheritingDeprecation.kt

@@ -1,6 +1,3 @@
-// MUTE_SIGNATURE_COMPARISON_K2: ANY
-// ^ KT-57754
-
 interface IFoo {
     @Deprecated("")
     val prop: String get() = ""

compiler/testData/ir/irText/declarations/kt35550.kt

@@ -1,6 +1,3 @@
-// MUTE_SIGNATURE_COMPARISON_K2: ANY
-// ^ KT-57754
-
 interface I {
     val <T> T.id: T
         get() = this

compiler/testData/ir/irText/declarations/parameters/delegatedMembers.kt

@@ -1,6 +1,3 @@
-// MUTE_SIGNATURE_COMPARISON_K2: ANY
-// ^ KT-57754
-
 interface IBase<T> {
     fun foo(x: Int)
     val bar: Int

compiler/testData/ir/irText/firProblems/DelegationAndInheritanceFromJava.kt

@@ -1,8 +1,5 @@
 // TARGET_BACKEND: JVM
 
-// MUTE_SIGNATURE_COMPARISON_K2: ANY
-// ^ KT-57754
-
 // FILE: Foo.java
 
 import java.util.Set;

compiler/testData/ir/irText/firProblems/lambdaInEnumEntryConstructorCall.kt

@@ -5,7 +5,7 @@
 // KT-50774
 
 // MUTE_SIGNATURE_COMPARISON_K2: ANY
-// ^ KT-57427, KT-57754
+// ^ KT-57427
 
 class Wrapper(var baseUrl: String)
 

compiler/testData/ir/irText/types/javaWildcardType.kt

@@ -1,8 +1,5 @@
 // TARGET_BACKEND: JVM
 
-// MUTE_SIGNATURE_COMPARISON_K2: ANY
-// ^ KT-57754
-
 // FILE: javaWildcardType.kt
 interface K {
     fun kf1(): Collection<out CharSequence>

compiler/testData/ir/irText/types/nullChecks/nullCheckOnInterfaceDelegation.kt

@@ -1,8 +1,5 @@
 // TARGET_BACKEND: JVM
 
-// MUTE_SIGNATURE_COMPARISON_K2: ANY
-// ^ KT-57754
-
 // MODULE: lib
 // FILE: A.java
 public class A {