refactor: update identifierForURL to slug in links

Author: rohitpaulk

app/components/course-admin/stage-insights-page/header.hbs

@@ -18,7 +18,7 @@
     <div class="flex flex-col items-end">
       <LinkTo
         @route="course.stage.instructions"
-        @models={{array @stage.course.slug @stage.identifierForURL}}
+        @models={{array @stage.course.slug @stage.slug}}
         class="text-gray-400 flex items-center hover:text-gray-600"
         target="_blank"
         rel="noopener noreferrer"

app/components/track-page/course-card/stage-list-item.hbs

@@ -1,6 +1,6 @@
 <LinkTo
   @route="course.stage.instructions"
-  @models={{array @stage.course.slug @stage.identifierForURL}}
+  @models={{array @stage.course.slug @stage.slug}}
   class="block hover:bg-gray-50 dark:hover:bg-gray-700/50 py-1.5 -mx-1.5 px-1.5 rounded-sm"
   data-test-stage-list-item
   ...attributes

app/templates/course-admin/code-example.hbs

@@ -1,12 +1,7 @@
 <div class="bg-white min-h-screen">
   <div class="container mx-auto pt-4 pb-10 px-6">
     <div class="py-3 border-b border-gray-200 mb-6">
-      <TertiaryLinkButton
-        @route="course.stage.code-examples"
-        @models={{array @model.solution.courseStage.identifierForURL}}
-        @size="small"
-        class="pl-1.5 mb-3"
-      >
+      <TertiaryLinkButton @route="course.stage.code-examples" @models={{array @model.solution.courseStage.slug}} @size="small" class="pl-1.5 mb-3">
         <div class="flex items-center">
           {{svg-jar "arrow-circle-left" class="w-4 h-4 mr-1.5 text-gray-500"}}
 

app/utils/course-page-step-list/course-stage-step.ts

@@ -121,7 +121,7 @@ Check the [How to pass this stage](#first-stage-tutorial-card) section for instr
   get routeParams() {
     return {
       route: 'course.stage.instructions',
-      models: [this.courseStage.course.slug, this.courseStage.identifierForURL],
+      models: [this.courseStage.course.slug, this.courseStage.slug],
     };
   }