FIR: Report diagnostics introduced during call completion

compiler/testData/diagnostics/tests/inference/completion/errorAfterCompletion.fir.kt

@@ -0,0 +1,8 @@
+// SKIP_TXT
+
+fun foo(x: () -> Int): Int = x()
+
+fun <R> myRun(x: () -> R): R = x()
+
+private val a = foo { myRun { <!ARGUMENT_TYPE_MISMATCH!>"OK"<!> } }
+private val b: Int = myRun { <!ARGUMENT_TYPE_MISMATCH!>"OK"<!> }