Fix radio widget default value and Post api save error

app/client/src/transformers/RestActionTransformer.ts

@@ -21,7 +21,7 @@ export const transformRestAction = (data: any): any => {
     data.displayFormat &&
     data.displayFormat === POST_BODY_FORMAT_OPTIONS[0].value
   ) {
-    if (data.actionConfiguration.body[0]) {
+    if (data.actionConfiguration.body && data.actionConfiguration.body[0]) {
       const body = data.actionConfiguration.body[0];
       action = {
         ...data,
@@ -36,7 +36,7 @@ export const transformRestAction = (data: any): any => {
     data.displayFormat &&
     data.displayFormat === POST_BODY_FORMAT_OPTIONS[1].value
   ) {
-    if (data.actionConfiguration.body[1]) {
+    if (data.actionConfiguration.body && data.actionConfiguration.body[1]) {
       const body = data.actionConfiguration.body[1];
       if (typeof data.actionConfiguration.body === "object") {
         action = {

app/client/src/widgets/BaseWidget.tsx

@@ -71,7 +71,7 @@ abstract class BaseWidget<
     return {};
   }
 
-  static getMetaPropertiesMap(): Record<string, string> {
+  static getMetaPropertiesMap(): Record<string, any> {
     return {};
   }
 

app/client/src/widgets/CheckboxWidget.tsx

@@ -34,7 +34,7 @@ class CheckboxWidget extends BaseWidget<CheckboxWidgetProps, WidgetState> {
 
   static getMetaPropertiesMap(): Record<string, any> {
     return {
-      isChecked: false,
+      isChecked: undefined,
     };
   }
 

app/client/src/widgets/DropdownWidget.tsx

@@ -88,7 +88,7 @@ class DropdownWidget extends BaseWidget<DropdownWidgetProps, WidgetState> {
   static getMetaPropertiesMap(): Record<string, any> {
     return {
       selectedOptionValue: undefined,
-      selectedOptionValueArr: [],
+      selectedOptionValueArr: undefined,
     };
   }
 

app/client/src/widgets/MapWidget.tsx

@@ -37,6 +37,13 @@ class MapWidget extends BaseWidget<MapWidgetProps, WidgetState> {
     };
   }
 
+  static getMetaPropertiesMap(): Record<string, undefined> {
+    return {
+      center: undefined,
+      markers: undefined,
+    };
+  }
+
   updateCenter = (lat: number, lng: number) => {
     this.updateWidgetMetaProperty("center", { lat, lng });
   };

app/client/src/widgets/RadioGroupWidget.tsx

@@ -43,7 +43,7 @@ class RadioGroupWidget extends BaseWidget<RadioGroupWidgetProps, WidgetState> {
 
   static getMetaPropertiesMap(): Record<string, any> {
     return {
-      selectedOptionValue: "",
+      selectedOptionValue: undefined,
     };
   }
 

app/client/src/widgets/RichTextEditorWidget.tsx

@@ -45,22 +45,6 @@ class RichTextEditorWidget extends BaseWidget<
     };
   }
 
-  componentDidMount() {
-    super.componentDidMount();
-    if (this.props.defaultText) {
-      this.updateWidgetMetaProperty("text", this.props.defaultText);
-    }
-  }
-
-  componentDidUpdate(prevProps: RichTextEditorWidgetProps) {
-    super.componentDidUpdate(prevProps);
-    if (this.props.defaultText) {
-      if (this.props.defaultText !== prevProps.defaultText) {
-        this.updateWidgetMetaProperty("text", this.props.defaultText);
-      }
-    }
-  }
-
   onValueChange = (text: string) => {
     this.updateWidgetMetaProperty("text", text);
     if (this.props.onTextChange) {