[FIR-TEST] Add new testdata generated after changes in previous commit

compiler/testData/diagnostics/tests/controlFlowAnalysis/unmappedArgs.fir.kt

@@ -0,0 +1,5 @@
+fun foo(a: Int, b: Int) = a + b
+
+fun bar(i: Int) {
+    <!INAPPLICABLE_CANDIDATE!>foo<!>(1, 1, i)
+}