fix(course-page): fix page reload after selecting language on the course page

[VasylMarchuk]

Closes #3658

Brief

TBD

Checklist

• I've thoroughly self-reviewed my changes
• I've added tests for my changes, unless they affect admin-only areas (or are otherwise not worth testing)
• I've verified any visual changes using Percy (add a commit with [percy] in the message to trigger)

[github-actions]

Test Results

  1 files  ±0    1 suites  ±0   6m 39s ⏱️ ±0s
707 tests ±0  641 ✅  - 3  63 💤 ±0  0 ❌ ±0  3 🔥 +3 
722 runs  ±0  653 ✅  - 6  63 💤 ±0  3 ❌ +3  3 🔥 +3 

For more details on these errors, see this check.

Results for commit 855b490. ± Comparison against base commit 31c101d.

♻️ This comment has been updated with latest results.

[codecov]

❌ 3 Tests Failed:

Tests completed	Failed	Passed	Skipped
644	3	641	63

View the top 3 failed test(s) by shortest run time

Chrome 143.0::Acceptance | course-page | start-course: can start course

Stack Traces | 0.48s run time

Promise rejected during "can start course": ✔ [1] ............/api/v1/repositories
✔ [2] ............/api/v1/repositories
✗ [3] Expected: .../api/v1/courses | Actual: <none>
   [4] Expected: ............/api/v1/repositories | Actual: <none>
   [5] Expected: ............/api/v1/leaderboard-rank-calculations | Actual: <none>
   [6] Expected: ............/api/v1/repositories | Actual: <none>
   [7] Expected: ............/api/v1/leaderboard-rank-calculations | Actual: <none>
   [8] Expected: ............/api/v1/leaderboard-entries | Actual: <none>
   [9] Expected: ............/api/v1/leaderboard-entries | Actual: <none>

Chrome 143.0::Acceptance | course-page | try-other-language: can try other language

Stack Traces | 0.737s run time

Promise rejected during "can try other language": ✔ [1] ............/api/v1/repositories
✔ [2] ............/api/v1/repositories
✗ [3] Expected: .../api/v1/courses | Actual: <none>
   [4] Expected: ............/api/v1/repositories | Actual: <none>
   [5] Expected: ............/api/v1/leaderboard-rank-calculations | Actual: <none>
   [6] Expected: ............/api/v1/repositories | Actual: <none>
   [7] Expected: ............/api/v1/leaderboard-rank-calculations | Actual: <none>
   [8] Expected: ............/api/v1/leaderboard-entries | Actual: <none>
   [9] Expected: ............/api/v1/leaderboard-entries | Actual: <none>

Chrome 143.0::Acceptance | course-page | leaderboard-progress: can complete first stage

Stack Traces | 0.999s run time

Promise rejected during "can complete first stage": Element not found.

PageObject: 'page.testsPassedModal'
  Selector: '[data-test-tests-passed-modal] [data-test-action-button-title]:contains("Mark stage as complete"):last'

PageObject: 'page.testsPassedModal.clickOnActionButton("Mark stage as complete")'
  Selector: '[data-test-tests-passed-modal] [data-test-action-button-title]'

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[codecov]

Bundle Report

Changes will increase total bundle size by 2.79kB (0.01%) ⬆️. This is within the configured threshold ✅

Detailed changes

Bundle name	Size	Change
client-array-push	39.36MB	2.79kB (0.01%) ⬆️

Affected Assets, Files, and Routes:

view changes for bundle: client-array-push

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
assets/chunk.*.js	2.79kB	392.05kB	0.72%

Files in assets/chunk.*.js:

• ./controllers/course.ts → Total Size: 15.05kB

• ./controllers/course/introduction.ts → Total Size: 1.69kB

• ./routes/course.ts → Total Size: 6.77kB

• ./routes/course/stage.ts → Total Size: 2.3kB

[codecov]

Bundle Report

Changes will increase total bundle size by 490 bytes (0.0%) ⬆️. This is within the configured threshold ✅

Detailed changes

Bundle name	Size	Change
client-array-push	39.47MB	490 bytes (0.0%) ⬆️

Affected Assets, Files, and Routes:

view changes for bundle: client-array-push

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
assets/chunk.*.js	490 bytes	389.05kB	0.13%

Files in assets/chunk.*.js:

• ./routes/course.ts → Total Size: 6.98kB

• ./controllers/course/introduction.ts → Total Size: 1.88kB

• ./controllers/course.ts → Total Size: 11.95kB