K2: Fix generic inference case with !! synthetic call

Result of the `checkNotNull` calls should always be a non-nullable
values.
The simplest idea how to acheive it is adding not-nullable Any bound
to the type parameter declaration.

Existing comment stating about impossibility of such bound seems to be
not 100% correct because it doesn't take into account presence of
definitely-non-nullable X & Any types that allow described case with
nullable generic.

^KT-55804 Fixed

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosticCompilerTestFE10TestdataTestGenerated.java

@@ -14366,6 +14366,12 @@ public class DiagnosticCompilerTestFE10TestdataTestGenerated extends AbstractDia
                 runTest("compiler/testData/diagnostics/tests/inference/errorsOnImplicitInvokeInSimpleCall.kt");
             }
 
+            @Test
+            @TestMetadata("exclExclInference.kt")
+            public void testExclExclInference() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/inference/exclExclInference.kt");
+            }
+
             @Test
             @TestMetadata("expectedTypeAdditionalTest.kt")
             public void testExpectedTypeAdditionalTest() throws Exception {

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated.java

@@ -14366,6 +14366,12 @@ public class LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated
                 runTest("compiler/testData/diagnostics/tests/inference/errorsOnImplicitInvokeInSimpleCall.kt");
             }
 
+            @Test
+            @TestMetadata("exclExclInference.kt")
+            public void testExclExclInference() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/inference/exclExclInference.kt");
+            }
+
             @Test
             @TestMetadata("expectedTypeAdditionalTest.kt")
             public void testExpectedTypeAdditionalTest() throws Exception {