FIR: Use more refined names instead of "safe"

^KT-38444 Fixed

compiler/fir/tree/tree-generator/src/org/jetbrains/kotlin/fir/tree/generator/BuilderConfigurator.kt

@@ -111,7 +111,7 @@ object BuilderConfigurator : AbstractBuilderConfigurator<FirTreeBuilder>(FirTree
             parents += qualifiedAccessBuilder
             defaultNull("explicitReceiver")
             defaultNoReceivers()
-            defaultFalse("safe")
+            defaultFalse("hasQuestionMarkAtLHS")
         }
 
         builder(componentCall) {
@@ -265,6 +265,10 @@ object BuilderConfigurator : AbstractBuilderConfigurator<FirTreeBuilder>(FirTree
             default("symbol", "FirAnonymousInitializerSymbol()")
         }
 
+        builder(resolvedQualifier) {
+            defaultFalse("isNullableLHSForCallableReference")
+        }
+
         val elementsWithDefaultTypeRef = listOf(
             thisReceiverExpression,
             callableReferenceAccess,

compiler/fir/tree/tree-generator/src/org/jetbrains/kotlin/fir/tree/generator/ImplementationConfigurator.kt

@@ -219,7 +219,7 @@ object ImplementationConfigurator : AbstractFirTreeImplementationConfigurator()
         impl(typeOperatorCall)
 
         impl(resolvedQualifier) {
-            isMutable("packageFqName", "relativeClassFqName", "safe")
+            isMutable("packageFqName", "relativeClassFqName", "isNullableLHSForCallableReference")
             default("classId") {
                 value = """
                     |relativeClassFqName?.let {

compiler/fir/tree/tree-generator/src/org/jetbrains/kotlin/fir/tree/generator/NodeConfigurator.kt

@@ -452,6 +452,7 @@ object NodeConfigurator : AbstractFieldConfigurator<FirTreeBuilder>(FirTreeBuild
 
         callableReferenceAccess.configure {
             +field("calleeReference", namedReference, withReplace = true).withTransform()
+            +booleanField("hasQuestionMarkAtLHS", withReplace = true)
         }
 
         getClassCall.configure {
@@ -476,7 +477,7 @@ object NodeConfigurator : AbstractFieldConfigurator<FirTreeBuilder>(FirTreeBuild
             +field("relativeClassFqName", fqNameType, nullable = true)
             +field("classId", classIdType, nullable = true)
             +field("symbol", classLikeSymbolType, nullable = true)
-            +booleanField("safe", withReplace = true)
+            +booleanField("isNullableLHSForCallableReference", withReplace = true)
             +typeArguments.withTransform()
         }