Add a comment that commands for dirty diff navigation need to be alwa…

…ys available

packages/scm/src/browser/scm-contribution.ts

@@ -193,6 +193,10 @@ export class ScmContribution extends AbstractViewContribution<ScmWidget> impleme
             execute: () => this.acceptInput(),
             isEnabled: () => !!this.scmFocus.get() && !!this.acceptInputCommand()
         });
+
+        // Note that commands for dirty diff navigation need to be always available.
+        // This is consistent with behavior in VS Code, and also with other similar commands (such as `Next Problem/Previous Problem`) in Theia.
+        // See https://github.com/eclipse-theia/theia/pull/13104#discussion_r1497316614 for a detailed discussion.
         commandRegistry.registerCommand(SCM_COMMANDS.GOTO_NEXT_CHANGE, {
             execute: () => this.dirtyDiffNavigator.gotoNextChange()
         });