Place !WITH_NEW_INFERENCE directive to diagnostics test data

compiler/testData/diagnostics/tests/controlFlowAnalysis/UninitializedOrReassignedVariables.kt

@@ -1,3 +1,4 @@
+// !WITH_NEW_INFERENCE
 package uninitialized_reassigned_variables
 
 fun doSmth(<!UNUSED_PARAMETER!>s<!>: String) {}

compiler/testData/diagnostics/tests/controlFlowAnalysis/elvisNotProcessed.kt

@@ -1,3 +1,4 @@
+// !WITH_NEW_INFERENCE
 // See KT-8277
 
 val v = { true } <!USELESS_ELVIS!>?: ( { true } <!USELESS_ELVIS_ON_LAMBDA_EXPRESSION!>?:<!> null!! )<!>

compiler/testData/diagnostics/tests/controlFlowAnalysis/fieldAsClassDelegate.kt

@@ -1,3 +1,4 @@
+// !WITH_NEW_INFERENCE
 // See KT-15566
 
 import DefaultHttpClient.client

compiler/testData/diagnostics/tests/controlFlowAnalysis/kt10805.kt

@@ -1,3 +1,4 @@
+// !WITH_NEW_INFERENCE
 // AssertionError for nested ifs with lambdas and Nothing as results
 
 val <!IMPLICIT_NOTHING_PROPERTY_TYPE!>fn<!> = if (true) {

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

@@ -1,3 +1,4 @@
+// !WITH_NEW_INFERENCE
 // See KT-10913 Bogus unreachable code warning
 
 fun fn() : String? = null