chore: Remove strict payload parsing (#34680)

Reverting #33724
temporarily, until we gain more confidence.

[Slack
conversation](https://theappsmith.slack.com/archives/C040LHZN03V/p1719997989677959).



<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **Refactor**
- Improved server configuration by removing unnecessary custom object
mapper settings.
- Optimized data source handling by cleaning up authentication object
manipulations.

- **New Features**
- Introduced a new method for future strict type checking on the server.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Co-authored-by: “sneha122” <“[email protected]”>

app/client/src/api/DatasourcesApi.ts

@@ -50,9 +50,6 @@ class DatasourcesApi extends API {
             datasourceConfiguration: {
               ...storage.datasourceConfiguration,
               isValid: undefined,
-              authentication: DatasourcesApi.cleanAuthenticationObject(
-                storage.datasourceConfiguration.authentication,
-              ),
               connection: storage.datasourceConfiguration.connection && {
                 ...storage.datasourceConfiguration.connection,
                 ssl: {
@@ -70,6 +67,7 @@ class DatasourcesApi extends API {
     return API.post(DatasourcesApi.url, datasourceConfig);
   }
 
+  // Need for when we add strict type checking back on server
   static cleanAuthenticationObject(authentication: any): any {
     if (!authentication) {
       return undefined;
@@ -144,9 +142,6 @@ class DatasourcesApi extends API {
       toastMessage: undefined,
       datasourceConfiguration: datasourceConfig.datasourceConfiguration && {
         ...datasourceConfig.datasourceConfiguration,
-        authentication: DatasourcesApi.cleanAuthenticationObject(
-          datasourceConfig.datasourceConfiguration.authentication,
-        ),
         connection: datasourceConfig.datasourceConfiguration.connection && {
           ...datasourceConfig.datasourceConfiguration.connection,
           ssl: {
@@ -179,9 +174,6 @@ class DatasourcesApi extends API {
       toastMessage: undefined,
       datasourceConfiguration: datasourceStorage.datasourceConfiguration && {
         ...datasourceStorage.datasourceConfiguration,
-        authentication: DatasourcesApi.cleanAuthenticationObject(
-          datasourceStorage.datasourceConfiguration.authentication,
-        ),
         connection: datasourceStorage.datasourceConfiguration.connection && {
           ...datasourceStorage.datasourceConfiguration.connection,
           ssl: {

app/server/appsmith-server/src/main/java/com/appsmith/server/configurations/CommonConfig.java

@@ -3,7 +3,6 @@
 import com.appsmith.util.JSONPrettyPrinter;
 import com.appsmith.util.SerializationUtils;
 import com.fasterxml.jackson.core.PrettyPrinter;
-import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
@@ -18,7 +17,6 @@
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
-import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
 import org.springframework.util.StringUtils;
 import reactor.core.scheduler.Scheduler;
 import reactor.core.scheduler.Schedulers;
@@ -103,16 +101,6 @@ public ObjectMapper objectMapper() {
         return SerializationUtils.getDefaultObjectMapper(null);
     }
 
-    @Bean
-    public MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter() {
-        final MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
-
-        converter.setObjectMapper(objectMapper()
-                .configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, "CE".equals(ProjectProperties.EDITION)));
-
-        return converter;
-    }
-
     @Bean
     public Gson gsonInstance() {
         GsonBuilder gsonBuilder = new GsonBuilder();