[FE] Provide overloadability for candidates with different CR

compiler/testData/codegen/box/extensionFunctions/contextReceivers/overloading.kt

@@ -0,0 +1,21 @@
+// !LANGUAGE: +ContextReceivers
+// TARGET_BACKEND: JVM_IR
+// IGNORE_BACKEND_FIR: JVM_IR
+
+context(Int, String)
+fun foo(): String = "O"
+
+context(Int)
+fun foo(): String = "K"
+
+fun box(): String {
+    val o = with ("") {
+        with(42) {
+            foo()
+        }
+    }
+    val k = with(42) {
+        foo()
+    }
+    return o + k
+}