Collect sam adapters for constructors in synthetic scope

Also place computation of synthetic constructors under one function

compiler/testData/diagnostics/tests/j+k/typeAliasWithSamConstructor.kt

@@ -0,0 +1,18 @@
+// FILE: OnSubscribe.java
+public interface OnSubscribe<T> {
+    void f();
+}
+
+// FILE: Observable.java
+public class Observable<T> {
+    public Observable(OnSubscribe<T> f) {
+    }
+}
+
+// FILE: Kotlin.kt
+
+typealias ObservableAlias<T> = Observable<T>
+typealias ObservableIntAlias = Observable<Int>
+
+class A : ObservableAlias<String>({})
+class B : ObservableIntAlias({})

compiler/testData/diagnostics/tests/j+k/typeAliasWithSamConstructor.txt

@@ -0,0 +1,31 @@
+package
+
+public final class A : ObservableAlias<kotlin.String> /* = Observable<kotlin.String> */ {
+    public constructor A()
+    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 open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public final class B : ObservableIntAlias /* = Observable<kotlin.Int> */ {
+    public constructor B()
+    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 open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public open class Observable</*0*/ T : kotlin.Any!> {
+    public constructor Observable</*0*/ T : kotlin.Any!>(/*0*/ f: OnSubscribe<T!>!)
+    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 open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public interface OnSubscribe</*0*/ T : kotlin.Any!> {
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public abstract fun f(): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+public typealias ObservableAlias</*0*/ T>  = Observable<T>
+public typealias ObservableIntAlias = Observable<kotlin.Int>

compiler/testData/diagnostics/tests/namedArguments/disallowForSamAdapterConstructor.txt

@@ -4,7 +4,6 @@ package test {
     public fun test(): kotlin.Unit
 
     public open class J {
-        public /*synthesized*/ constructor J(/*0*/ s: kotlin.String!, /*1*/ r: (() -> kotlin.Unit)!, /*2*/ z: kotlin.Boolean!)
         public constructor J(/*0*/ s: kotlin.String!, /*1*/ r: java.lang.Runnable!, /*2*/ z: kotlin.Boolean!)
         public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
         public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int

compiler/testData/diagnostics/tests/platformTypes/samAdapterInConstructor.txt

@@ -3,7 +3,6 @@ package
 public fun foo(): kotlin.Unit
 
 public open class A</*0*/ E : kotlin.Any!> {
-    public /*synthesized*/ constructor A</*0*/ E : kotlin.Any!>(/*0*/ comparator: ((E!, E!) -> kotlin.Int)!)
     public constructor A</*0*/ E : kotlin.Any!>(/*0*/ comparator: java.util.Comparator<in E!>!)
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int