small cleanup per code reviews suggestions

Author: didoo

packages/components/src/components/hds/theme-context/index.ts

@@ -17,7 +17,7 @@ import type { HdsThemes, HdsModes } from '../../../services/hds-theming.ts';
 
 export interface HdsThemeContextSignature {
   Args: {
-    // it can be an `HdsTheme` or an `HdsMode`
+    // can be either an `HdsTheme` or an `HdsMode`
     context: HdsThemeContexts;
   };
   Blocks: {

showcase/app/components/mock/app/sidebar/app-side-nav.gts

@@ -156,7 +156,6 @@ export default class MockAppSidebarAppSideNav extends Component<MockAppSidebarAp
             {{yield to="extraAfter"}}
           </SNL.ExtraAfter>
         {{/if}}
-
       </HdsAppSideNavList>
     </HdsAppSideNav>
   </template>

showcase/app/components/page-foundations/theming/sub-sections/contexts.gts

@@ -24,7 +24,7 @@ import {
 import type { ShwStylesheets } from 'showcase/services/shw-theming';
 
 const styleIsAvailable = helper(
-  ([currentStylesheet, context]: [ShwStylesheets, string]) => {
+  ([currentStylesheet, context]: [ShwStylesheets, HdsThemeContexts]) => {
     const isAvailable =
       (context === 'default' &&
         (currentStylesheet === 'css-selectors--migration' ||