K2: Set proper source for implicit it/receiver parameter

Previously, error types on those implicit parameters were being lost.

Changed test data is only partly here
(only parts that are considered to be correct).

Other ones (new green-to-red changes) should belong to the next commit
and will be fixed soon (as a part of PCLA).

compiler/testData/diagnostics/tests/inference/functionPlaceholderError.fir.kt

@@ -0,0 +1,16 @@
+// !CHECK_TYPE
+
+package a
+
+import checkSubtype
+
+fun <T> emptyList(): List<T> = throw Exception()
+
+fun <T> foo(f: T.() -> Unit, l: List<T>): T = throw Exception("$f$l")
+
+fun test() {
+    val q = foo(fun Int.() {}, emptyList()) //type inference no information for parameter error
+    checkSubtype<Int>(q)
+
+    <!NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>foo<!>(<!CANNOT_INFER_PARAMETER_TYPE!>{}<!>, <!NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>emptyList<!>())
+}