Add FIR problematic test (safe extension invoke)

compiler/fir/resolve/testData/resolve/expresssions/invoke/extensionSafeCall.kt

@@ -0,0 +1,4 @@
+fun bar(doIt: Int.() -> Int) {
+    val i: Int? = 1
+    i?.<!INAPPLICABLE_CANDIDATE!>doIt<!>()
+}

compiler/fir/resolve/testData/resolve/expresssions/invoke/extensionSafeCall.txt

@@ -0,0 +1,5 @@
+FILE: extensionSafeCall.kt
+    public final fun bar(doIt: R|kotlin/Int.() -> kotlin/Int|): R|kotlin/Unit| {
+        lval i: R|kotlin/Int?| = Int(1)
+        R|<local>/i|?.<Inapplicable(INAPPLICABLE): [kotlin/Function1.invoke]>#()
+    }

compiler/fir/resolve/tests/org/jetbrains/kotlin/fir/FirDiagnosticsTestGenerated.java

@@ -774,6 +774,11 @@ public class FirDiagnosticsTestGenerated extends AbstractFirDiagnosticsTest {
                 runTest("compiler/fir/resolve/testData/resolve/expresssions/invoke/extensionOnObject.kt");
             }
 
+            @TestMetadata("extensionSafeCall.kt")
+            public void testExtensionSafeCall() throws Exception {
+                runTest("compiler/fir/resolve/testData/resolve/expresssions/invoke/extensionSafeCall.kt");
+            }
+
             @TestMetadata("farInvokeExtension.kt")
             public void testFarInvokeExtension() throws Exception {
                 runTest("compiler/fir/resolve/testData/resolve/expresssions/invoke/farInvokeExtension.kt");

compiler/fir/resolve/tests/org/jetbrains/kotlin/fir/FirDiagnosticsWithLightTreeTestGenerated.java

@@ -774,6 +774,11 @@ public class FirDiagnosticsWithLightTreeTestGenerated extends AbstractFirDiagnos
                 runTest("compiler/fir/resolve/testData/resolve/expresssions/invoke/extensionOnObject.kt");
             }
 
+            @TestMetadata("extensionSafeCall.kt")
+            public void testExtensionSafeCall() throws Exception {
+                runTest("compiler/fir/resolve/testData/resolve/expresssions/invoke/extensionSafeCall.kt");
+            }
+
             @TestMetadata("farInvokeExtension.kt")
             public void testFarInvokeExtension() throws Exception {
                 runTest("compiler/fir/resolve/testData/resolve/expresssions/invoke/farInvokeExtension.kt");