chore: Simpler sequence implementation (appsmithorg#32264)

Don't use MongoDB API to decide the key name to use for the sequence
name. This API is currently used only for datasources, so this
implementation will be compatible with both MongoDB and Postgres.

The actual sequence number generation, in the `getNext` method, will
basically need to be rewritten in the Postgres branch.

app/server/appsmith-server/src/main/java/com/appsmith/server/services/ce/SequenceServiceCE.java

@@ -5,9 +5,5 @@
 
 public interface SequenceServiceCE {
 
-    Mono<Long> getNext(String name);
-
-    Mono<Long> getNext(Class<? extends BaseDomain> domainClass, String suffix);
-
     Mono<String> getNextAsSuffix(Class<? extends BaseDomain> domainClass, String suffix);
 }

app/server/appsmith-server/src/main/java/com/appsmith/server/services/ce/SequenceServiceCEImpl.java

@@ -2,7 +2,7 @@
 
 import com.appsmith.external.models.BaseDomain;
 import com.appsmith.server.domains.Sequence;
-import org.springframework.beans.factory.annotation.Autowired;
+import lombok.RequiredArgsConstructor;
 import org.springframework.data.mongodb.core.ReactiveMongoTemplate;
 import org.springframework.data.mongodb.core.query.Update;
 import reactor.core.publisher.Mono;
@@ -11,17 +11,12 @@
 import static org.springframework.data.mongodb.core.query.Criteria.where;
 import static org.springframework.data.mongodb.core.query.Query.query;
 
+@RequiredArgsConstructor
 public class SequenceServiceCEImpl implements SequenceServiceCE {
 
     private final ReactiveMongoTemplate mongoTemplate;
 
-    @Autowired
-    public SequenceServiceCEImpl(ReactiveMongoTemplate mongoTemplate) {
-        this.mongoTemplate = mongoTemplate;
-    }
-
-    @Override
-    public Mono<Long> getNext(String name) {
+    private Mono<Long> getNext(String name) {
         return mongoTemplate
                 .findAndModify(
                         query(where("name").is(name)),
@@ -31,14 +26,10 @@ public Mono<Long> getNext(String name) {
                 .map(Sequence::getNextNumber);
     }
 
-    @Override
-    public Mono<Long> getNext(Class<? extends BaseDomain> domainClass, String suffix) {
-        return getNext(mongoTemplate.getCollectionName(domainClass) + suffix);
-    }
-
     @Override
     public Mono<String> getNextAsSuffix(Class<? extends BaseDomain> domainClass, String suffix) {
-        return getNext(mongoTemplate.getCollectionName(domainClass) + suffix)
-                .map(number -> number > 1 ? " " + number : "");
+        final String className = domainClass.getName();
+        final String name = className.substring(0, 1).toLowerCase() + className.substring(1) + suffix;
+        return getNext(name).map(number -> number > 1 ? " " + number : "");
     }
 }