Fixed linter error for commands without arguments.

The linter will complain if there is a command with no arguments even though the command itself doesn't have any argument defined in the command dictionary.

src/utilities/sequence-editor/sequence-linter.ts

@@ -1245,7 +1245,7 @@ function validateCommandStructure(
   addDefault: (view: any) => any,
 ): Diagnostic | undefined {
   if (arguments.length > 0) {
-    if (!argsNode || argsNode.length === 0) {
+    if (!argsNode || (argsNode.length === 0 && exactArgSize > 0)) {
       return {
         actions: [],
         from: stemNode.from,