[NI] remove redundant replacing receiver in lambda function descriptor

#KT-30927 Fixed
#KT-31057 Fixed

compiler/testData/diagnostics/tests/smartCasts/kt30927.kt

@@ -0,0 +1,51 @@
+// !DIAGNOSTICS: -UNUSED_EXPRESSION
+// !WITH_NEW_INFERENCE
+// !CHECK_TYPE
+
+fun case_0() {
+    val z: Any? = 10
+    val y = z.run {
+        this as Int
+        <!NI;DEBUG_INFO_SMARTCAST!>this<!> // error in NI: required Int, found Any?; just inferred to Any? in OI
+    }
+    y checkType { <!NI;DEBUG_INFO_UNRESOLVED_WITH_TARGET, NI;UNRESOLVED_REFERENCE_WRONG_RECEIVER!>_<!><Any?>() }
+    y checkType { <!OI;TYPE_MISMATCH!>_<!><Int>() }
+}
+
+fun case_1(z: Any?) {
+    val y = z.run {
+        when (this) {
+            is String -> return@run <!NI;DEBUG_INFO_SMARTCAST!>this<!> // type mismatch in the new inference (required String, found Any?)
+            is Float -> ""
+            else -> return@run ""
+        }
+    }
+    y checkType { <!NI;DEBUG_INFO_UNRESOLVED_WITH_TARGET, NI;UNRESOLVED_REFERENCE_WRONG_RECEIVER!>_<!><Any?>() }
+    y checkType { <!OI;TYPE_MISMATCH!>_<!><kotlin.String>() }
+    // y is inferred to Any?
+}
+
+fun case_2(z: Any?) {
+    val y = z.run {
+        when (this) {
+            is String -> <!DEBUG_INFO_SMARTCAST!>this<!>
+            is Float -> ""
+            else -> return@run ""
+        }
+    }
+    y checkType { _<kotlin.String>() }
+    // y is inferred to String
+}
+
+fun case_3(z: Any?) {
+    val y = z.let {
+        when (it) {
+            is String -> return@let <!NI;DEBUG_INFO_SMARTCAST!>it<!>
+            is Float -> ""
+            else -> return@let ""
+        }
+    }
+    y checkType { <!NI;DEBUG_INFO_UNRESOLVED_WITH_TARGET, NI;UNRESOLVED_REFERENCE_WRONG_RECEIVER!>_<!><Any?>() }
+    y checkType { <!OI;TYPE_MISMATCH!>_<!><kotlin.String>() }
+    // y is inferred to String
+}

compiler/testData/diagnostics/tests/smartCasts/kt30927.txt

@@ -0,0 +1,6 @@
+package
+
+public fun case_0(): kotlin.Unit
+public fun case_1(/*0*/ z: kotlin.Any?): kotlin.Unit
+public fun case_2(/*0*/ z: kotlin.Any?): kotlin.Unit
+public fun case_3(/*0*/ z: kotlin.Any?): kotlin.Unit