Allow to turn the first parameter of a SAM-converted lambda into the receiver (KT-12848)

plugins/sam-with-receiver/sam-with-receiver-cli/testData/diagnostics/singleParameter.kt

@@ -0,0 +1,22 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER,-UNUSED_VARIABLE
+
+// FILE: Sam.java
+@SamWithReceiver
+public interface Sam {
+    void run(String a);
+}
+
+// FILE: test.kt
+annotation class SamWithReceiver
+
+fun test() {
+    Sam { <!EXPECTED_PARAMETERS_NUMBER_MISMATCH, CANNOT_INFER_PARAMETER_TYPE!>a<!> ->
+        System.out.println(<!DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE!>a<!>)
+    }
+
+    Sam {
+        val a: String = this
+        val a2: String = <!UNRESOLVED_REFERENCE!>it<!>
+        System.out.println(a)
+    }
+}