FIR: record 'suspend' function modifier in type references

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

@@ -232,6 +232,7 @@ object BuilderConfigurator : AbstractBuilderConfigurator<FirTreeBuilder>(FirTree
         }
 
         builder(resolvedTypeRef) {
+            defaultFalse("isSuspend")
             defaultNull("delegatedTypeRef")
         }
 

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

@@ -376,6 +376,7 @@ object ImplementationConfigurator : AbstractFirTreeImplementationConfigurator()
                 withGetter = true
             }
             default("annotations", "mutableListOf()")
+            defaultFalse("isSuspend")
             useTypes(coneClassErrorTypeType)
         }
 
@@ -398,12 +399,23 @@ object ImplementationConfigurator : AbstractFirTreeImplementationConfigurator()
             useTypes(errorTypeRefImpl)
         }
 
-        impl(functionTypeRef)
-        impl(implicitTypeRef) {
-            defaultEmptyList("annotations")
+        impl(dynamicTypeRef) {
+            defaultFalse("isSuspend")
         }
 
-        impl(composedSuperTypeRef)
+        impl(functionTypeRef) {
+            // Note that we intentionally do _not_ set default value (false) for `isSuspend`, since function type reference is the only
+            // place where type modifier `suspend` matters.
+        }
+
+        impl(implicitTypeRef) {
+            defaultEmptyList("annotations")
+            defaultFalse("isSuspend")
+        }
+
+        impl(composedSuperTypeRef) {
+            defaultFalse("isSuspend")
+        }
 
         impl(reference, "FirStubReference") {
             default("source") {
@@ -454,6 +466,7 @@ object ImplementationConfigurator : AbstractFirTreeImplementationConfigurator()
                     delegate = "typeRef"
                 }
             }
+            defaultFalse("isSuspend")
         }
 
         noImpl(userTypeRef)

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

@@ -530,6 +530,7 @@ object NodeConfigurator : AbstractFieldConfigurator<FirTreeBuilder>(FirTreeBuild
 
         typeRef.configure {
             +annotations
+            +booleanField("isSuspend")
         }
 
         resolvedTypeRef.configure {