refactor: reuse commandSupportsReadConcern for now

Author: mbroadst

lib/core/sessions.js

@@ -736,5 +736,6 @@ module.exports = {
   ServerSessionPool,
   TxnState,
   applySession,
-  updateSessionFromResponse
+  updateSessionFromResponse,
+  commandSupportsReadConcern
 };

lib/operations/command_v2.js

@@ -6,6 +6,7 @@ const resolveReadPreference = require('../utils').resolveReadPreference;
 const ReadConcern = require('../read_concern');
 const WriteConcern = require('../write_concern');
 const maxWireVersion = require('../core/utils').maxWireVersion;
+const commandSupportsReadConcern = require('../core/sessions').commandSupportsReadConcern;
 
 class CommandOperationV2 extends OperationBase {
   constructor(parent, options) {
@@ -37,7 +38,7 @@ class CommandOperationV2 extends OperationBase {
     const serverWireVersion = maxWireVersion(server);
     const inTransaction = this.session && this.session.inTransaction();
 
-    if (this.readConcern && this.hasAspect(Aspect.READ_OPERATION) && !inTransaction) {
+    if (this.readConcern && commandSupportsReadConcern(cmd) && !inTransaction) {
       Object.assign(cmd, { readConcern: this.readConcern });
     }