Remove unnecessary exception for engine constructor

The internal engine constructor declares a checked engine exception yet
this constructor does not actually throw this exception. This commit
removes this declaration from the internal engine constructor.

Relates #27022

core/src/main/java/org/elasticsearch/index/engine/InternalEngine.java

@@ -144,7 +144,7 @@ public class InternalEngine extends Engine {
     @Nullable
     private final String historyUUID;
 
-    public InternalEngine(EngineConfig engineConfig) throws EngineException {
+    public InternalEngine(EngineConfig engineConfig) {
         super(engineConfig);
         openMode = engineConfig.getOpenMode();
         if (engineConfig.isAutoGeneratedIDsOptimizationEnabled() == false) {