FIR DFA: generate type implications on all null comparisons

compiler/testData/diagnostics/tests/smartCasts/elvis/basicOn.fir.kt

@@ -39,12 +39,12 @@ fun bar(o: Any) {
 
 fun baz(o: Boolean?) {
     if (o ?: false) {
-        o<!UNSAFE_CALL!>.<!>hashCode()
+        o.hashCode()
     }
     if (o ?: true) {
 
     }
     else {
-        o<!UNSAFE_CALL!>.<!>hashCode()
+        o.hashCode()
     }
 }

compiler/testData/diagnostics/tests/when/When.fir.kt

@@ -22,7 +22,7 @@ fun foo() : Int {
       <!USELESS_IS_CHECK!>!is Int<!> -> 1
       <!USELESS_IS_CHECK!>is Any?<!> -> 1
       <!USELESS_IS_CHECK!>is Any<!> -> 1
-      <!INCOMPATIBLE_TYPES!>s<!> -> 1
+      s -> 1
       1 -> 1
       1 <!OVERLOAD_RESOLUTION_AMBIGUITY!>+<!> <!UNRESOLVED_REFERENCE!>a<!> -> 1
       in 1..<!UNRESOLVED_REFERENCE!>a<!> -> 1