JS: add test to prove that KT-14419 is not more reproducible. Add test to prove that extension delegate with extension getValue is translated correctly.

compiler/testData/codegen/box/delegatedProperty/extensionDelegatesWithSameNames.kt

@@ -0,0 +1,14 @@
+open class C
+
+object O : C()
+
+object K : C()
+
+class D(val value: String) {
+    operator fun getValue(thisRef: C, property: Any): String = value
+}
+
+val O.prop by D("O")
+val K.prop by D("K")
+
+fun box() = O.prop + K.prop

compiler/testData/codegen/box/delegatedProperty/extensionPropertyAndExtensionGetValue.kt

@@ -0,0 +1,13 @@
+class A(val o: String)
+
+interface I {
+    val k: String
+}
+
+inline operator fun A.getValue(thisRef: I, property: Any): String = o + thisRef.k
+
+class B(override val k: String) : I
+
+val B.prop by A("O")
+
+fun box() = B("K").prop

compiler/testData/codegen/light-analysis/delegatedProperty/extensionDelegatesWithSameNames.txt

@@ -0,0 +1,33 @@
+public class C {
+    public method <init>(): void
+}
+
+
+public final class D {
+    private final @org.jetbrains.annotations.NotNull field value: java.lang.String
+    public method <init>(@org.jetbrains.annotations.NotNull p0: java.lang.String): void
+    public final @org.jetbrains.annotations.NotNull method getValue(): java.lang.String
+    public final @org.jetbrains.annotations.NotNull method getValue(@org.jetbrains.annotations.NotNull p0: C, @org.jetbrains.annotations.NotNull p1: java.lang.Object): java.lang.String
+}
+
+
+public final class ExtensionDelegatesWithSameNamesKt {
+    private synthetic final static field $$delegatedProperties: kotlin.reflect.KProperty[]
+    private final static @org.jetbrains.annotations.NotNull field prop$delegate$1: D
+    private final static @org.jetbrains.annotations.NotNull field prop$delegate: D
+    public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
+    public final static @org.jetbrains.annotations.NotNull method getProp(@org.jetbrains.annotations.NotNull p0: K): java.lang.String
+    public final static @org.jetbrains.annotations.NotNull method getProp(@org.jetbrains.annotations.NotNull p0: O): java.lang.String
+}
+
+
+public final class K {
+    public final static field INSTANCE: K
+    private method <init>(): void
+}
+
+
+public final class O {
+    public final static field INSTANCE: O
+    private method <init>(): void
+}

compiler/testData/codegen/light-analysis/delegatedProperty/extensionPropertyAndExtensionGetValue.txt

@@ -0,0 +1,26 @@
+public final class A {
+    private final @org.jetbrains.annotations.NotNull field o: java.lang.String
+    public method <init>(@org.jetbrains.annotations.NotNull p0: java.lang.String): void
+    public final @org.jetbrains.annotations.NotNull method getO(): java.lang.String
+}
+
+
+public final class B {
+    private final @org.jetbrains.annotations.NotNull field k: java.lang.String
+    public method <init>(@org.jetbrains.annotations.NotNull p0: java.lang.String): void
+    public @org.jetbrains.annotations.NotNull method getK(): java.lang.String
+}
+
+
+public final class ExtensionPropertyAndExtensionGetValueKt {
+    private synthetic final static field $$delegatedProperties: kotlin.reflect.KProperty[]
+    private final static @org.jetbrains.annotations.NotNull field prop$delegate: A
+    public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
+    public final static @org.jetbrains.annotations.NotNull method getProp(@org.jetbrains.annotations.NotNull p0: B): java.lang.String
+    public final static @org.jetbrains.annotations.NotNull method getValue(@org.jetbrains.annotations.NotNull p0: A, @org.jetbrains.annotations.NotNull p1: I, @org.jetbrains.annotations.NotNull p2: java.lang.Object): java.lang.String
+}
+
+
+public interface I {
+    public abstract @org.jetbrains.annotations.NotNull method getK(): java.lang.String
+}