[FIR] FirVariable: add replace method for delegate

It is required to properly implement lazy expression calculation

^KT-59687

compiler/fir/java/src/org/jetbrains/kotlin/fir/java/declarations/FirJavaField.kt

@@ -142,6 +142,7 @@ class FirJavaField @FirImplementationDetail constructor(
         return this
     }
 
+    override fun replaceDelegate(newDelegate: FirExpression?) {}
     override val delegate: FirExpression?
         get() = null
 

compiler/fir/java/src/org/jetbrains/kotlin/fir/java/declarations/FirJavaValueParameter.kt

@@ -178,6 +178,8 @@ class FirJavaValueParameter @FirImplementationDetail constructor(
     override fun replaceInitializer(newInitializer: FirExpression?) {
     }
 
+    override fun replaceDelegate(newDelegate: FirExpression?) {}
+
     override fun replaceControlFlowGraphReference(newControlFlowGraphReference: FirControlFlowGraphReference?) {
     }