KT-2752: fix name clash diagnostic for case of extension property. Add more tests for the diagnostic

compiler/testData/diagnostics/testsWithJsStdLib/name/extensionPropertyAndMethod.kt

@@ -0,0 +1,8 @@
+package foo
+
+class A
+
+<!JS_NAME_CLASH!>fun A.get_bar() = 23<!>
+
+val A.bar: Int
+  <!JS_NAME_CLASH!>get() = 42<!>

compiler/testData/diagnostics/testsWithJsStdLib/name/extensionPropertyAndMethod.txt

@@ -0,0 +1,13 @@
+package
+
+package foo {
+    public val foo.A.bar: kotlin.Int
+    public fun foo.A.get_bar(): kotlin.Int
+
+    public final class A {
+        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
+    }
+}

compiler/testData/diagnostics/testsWithJsStdLib/name/extensionPropertyAndMethodDoNotClash.kt

@@ -0,0 +1,8 @@
+package foo
+
+class A
+
+fun A.bar() = 32
+
+val A.bar: Int
+    get() = 32

compiler/testData/diagnostics/testsWithJsStdLib/name/extensionPropertyAndMethodDoNotClash.txt

@@ -0,0 +1,13 @@
+package
+
+package foo {
+    public val foo.A.bar: kotlin.Int
+    public fun foo.A.bar(): kotlin.Int
+
+    public final class A {
+        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
+    }
+}

compiler/testData/diagnostics/testsWithJsStdLib/name/methodAndMethod.kt

@@ -0,0 +1,5 @@
+package foo
+
+<!JS_NAME_CLASH!>fun bar(x: Int) = x<!>
+
+<!JS_NAME_CLASH!>fun `bar_za3lpa$`() = 42<!>

compiler/testData/diagnostics/testsWithJsStdLib/name/methodAndMethod.txt

@@ -0,0 +1,6 @@
+package
+
+package foo {
+    public fun bar(/*0*/ x: kotlin.Int): kotlin.Int
+    public fun `bar_za3lpa$`(): kotlin.Int
+}