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

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

@@ -0,0 +1,13 @@
+// !WITH_NEW_INFERENCE
+// See KT-10913 Bogus unreachable code warning
+
+fun fn() : String? = null
+fun foo(): String {
+    val x = fn()?.let { throw Exception() } ?: "unreachable?"
+    return x
+}
+fun bar(): String {
+    val x = fn() ?: return ""
+    val y = x?.let { throw Exception() } ?: "unreachable"
+    return y
+}