KT-51475 Add a test

compiler/testData/codegen/box/extensionFunctions/contextReceivers/kt51475.kt

@@ -0,0 +1,26 @@
+// !LANGUAGE: +ContextReceivers
+// TARGET_BACKEND: JVM_IR
+// WITH_STDLIB
+// !OPT_IN: kotlin.contracts.ExperimentalContracts
+
+import kotlin.contracts.*
+
+class Smth {
+    val whatever: Int
+
+    init {
+        calculate { whatever = it }
+    }
+
+    context(Any)
+    inline fun calculate(block: (Int) -> Unit) {
+        contract {
+            callsInPlace(block, InvocationKind.EXACTLY_ONCE)
+        }
+    }
+}
+
+fun box(): String {
+    val s = Smth()
+    return "OK"
+}