[FIR] Enable asserts for not building AST tree in lazy mode

Make interface delegate expressions lazy

compiler/fir/raw-fir/psi2fir/testData/rawBuilder/declarations/delegates.kt

@@ -11,3 +11,9 @@ val delegate = object: ReadWriteProperty<Any?, Int> {
 val value by delegate
 
 var variable by delegate
+
+interface Base {
+}
+
+class Derived(b: Base) : Base by b {
+}

compiler/fir/raw-fir/psi2fir/testData/rawBuilder/declarations/delegates.lazyBodies.txt

@@ -16,3 +16,13 @@ FILE: delegates.kt
         public? set(<set-?>: <implicit>): R|kotlin/Unit| {
             D|/variable|.setValue#(Null(null), ::R|/variable|, R|<local>/variable|)
         }
+    public? final? interface Base : R|kotlin/Any| {
+    }
+    public? final? class Derived : Base {
+        public? constructor(b: Base): R|Derived| {
+            LAZY_super<<implicit>>
+        }
+
+        private final field $$delegate_0: Base = LAZY_EXPRESSION
+
+    }

compiler/fir/raw-fir/psi2fir/testData/rawBuilder/declarations/delegates.txt

@@ -32,3 +32,13 @@ FILE: delegates.kt
         public? set(<set-?>: <implicit>): R|kotlin/Unit| {
             D|/variable|.setValue#(Null(null), ::R|/variable|, R|<local>/variable|)
         }
+    public? final? interface Base : R|kotlin/Any| {
+    }
+    public? final? [DelegateFieldsMapKey={0=FirFieldSymbol /Derived.$$delegate_0}] class Derived : Base {
+        public? [ContainingClassKey=Derived] constructor(b: Base): R|Derived| {
+            super<<implicit>>()
+        }
+
+        private final field $$delegate_0: Base = b#
+
+    }