FIR: Refine callable reference resolution in assignment position

synthetic_select<() -> T>(::foo) form allows to select better candidate
than synthetic_select(::foo) with expect type `() -> T`

compiler/fir/analysis-tests/testData/resolveWithStdlib/diagnostics/initializerTypeMismatchChecker/functionType.kt

@@ -11,7 +11,7 @@ package testsCase1
 class Case() {
     fun case(v: V) {
         // InitializerTypeMismatchChecker bug
-        val va: () -> String = <!INITIALIZER_TYPE_MISMATCH!>(V)::a<!>
+        val va: () -> String = (V)::a
 
         val vb: () -> String = (V)::b
 

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirOldFrontendDiagnosticsTestGenerated.java

@@ -2603,6 +2603,12 @@ public class FirOldFrontendDiagnosticsTestGenerated extends AbstractFirDiagnosti
                 runTest("compiler/testData/diagnostics/tests/callableReference/callableReferenceAsLastExpressionInBlock.kt");
             }
 
+            @Test
+            @TestMetadata("callableReferenceAssignmentToVar.kt")
+            public void testCallableReferenceAssignmentToVar() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/callableReference/callableReferenceAssignmentToVar.kt");
+            }
+
             @Test
             @TestMetadata("classVsPackage.kt")
             public void testClassVsPackage() throws Exception {

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirOldFrontendDiagnosticsWithLightTreeTestGenerated.java

@@ -2603,6 +2603,12 @@ public class FirOldFrontendDiagnosticsWithLightTreeTestGenerated extends Abstrac
                 runTest("compiler/testData/diagnostics/tests/callableReference/callableReferenceAsLastExpressionInBlock.kt");
             }
 
+            @Test
+            @TestMetadata("callableReferenceAssignmentToVar.kt")
+            public void testCallableReferenceAssignmentToVar() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/callableReference/callableReferenceAssignmentToVar.kt");
+            }
+
             @Test
             @TestMetadata("classVsPackage.kt")
             public void testClassVsPackage() throws Exception {