K2: disable compatibility mode for new inference

#KT-64306 Fixed
#KT-64307 Fixed
#KT-64308 Fixed

compiler/testData/diagnostics/tests/samConversions/samPriorityVsGeneric.fir.kt

@@ -0,0 +1,12 @@
+// SKIP_TXT
+// FULL_JDK
+
+fun <T> bar(action: () -> T): T = action()
+fun bar(action: java.lang.Runnable) { }
+
+fun foo(): String = ""
+
+fun main() {
+    val x = bar() { foo() } // OK with default current 1.5/1.6, Error with DisableCompatibilityModeForNewInference enabled
+    x.<!UNRESOLVED_REFERENCE!>length<!>
+}

compiler/testData/diagnostics/tests/samConversions/samPriorityVsGeneric.kt

@@ -1,5 +1,4 @@
 // SKIP_TXT
-// FIR_IDENTICAL
 // FULL_JDK
 
 fun <T> bar(action: () -> T): T = action()