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

compiler/testData/diagnostics/tests/inference/commonSystem/nonFixedVariableFromBothBranches.fir.kt

@@ -0,0 +1,20 @@
+// !LANGUAGE: +NewInference
+// !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_EXPRESSION
+
+// FILE: JavaTest.java
+
+public class JavaTest {
+    public static Number[] createNumberArray() { return null; }
+}
+
+// FILE: test.kt
+
+fun <K> select(x: K, y: K): K = x
+
+fun <R> foo(f: () -> R): R = f()
+
+fun test(n: Number) {
+    val a = select(foo { JavaTest.createNumberArray() }, emptyArray())
+
+    a
+}