Remember playground format via local storage

[burieberry]

• in playground panel, the selected card preview format is now remembered

[github-actions]

Host Test Results

    1 files  ±  0      1 suites  ±0   22m 52s ⏱️ +57s
766 tests +63  764 ✔️ +63  2 💤 +1  0 ❌  - 1 
771 runs  +64  769 ✔️ +64  2 💤 +1  0 ❌  - 1 

Results for commit cc1dd6d. ± Comparison against base commit 818be4d.

This pull request removes 1 and adds 64 tests. Note that renamed tests count towards both.

Chrome 133.0 ‑ Global error: Uncaught Error: status: 500 -           . unexpected exception in realm TypeError: Failed to fetch at http://localhost:7357/assets/chunk.79fc60c15c7eda0270ed.js, line 464082  While executing test: Acceptance | code submode tests > single realm: updates values in preview panel must be represented in editor panel 

Chrome 133.0 ‑ Acceptance | code submode tests > single realm: card preview live updates when index changes
Chrome 133.0 ‑ Acceptance | code submode tests > single realm: card preview live updates when there is a change in module
Chrome 133.0 ‑ Acceptance | code submode tests > single realm: card preview live updates with error
Chrome 133.0 ‑ Acceptance | code submode tests > single realm: card-catalog does not offer to "create new card" when editing linked fields in code mode
Chrome 133.0 ‑ Acceptance | code submode tests > single realm: closes the top-most modal first when clicking overlay background
Chrome 133.0 ‑ Acceptance | code submode tests > single realm: monaco editor live updates when index changes
Chrome 133.0 ‑ Acceptance | code submode tests > single realm: remembers open RHS panel via local storage
Chrome 133.0 ‑ Acceptance | code submode tests > single realm: updates values in preview panel must be represented in editor panel
Chrome 133.0 ‑ Acceptance | code submode | recent files tests: displays recent files in base realm
Chrome 133.0 ‑ Acceptance | code submode | recent files tests: recent file links are shown
…

♻️ This comment has been updated with latest results.

[jurgenwerk]

Related question, I am using playground in another branch (#2137) and after refreshing the playground doesn't stay open, I think this would be really helpful to persist too (in case it's not already implemented–I'm not sure if my branch is outdated)

[burieberry]

Related question, I am using playground in another branch (#2137) and after refreshing the playground doesn't stay open, I think this would be really helpful to have too (in case it's not already implemented–I'm not sure if my branch is outdated)

Merged #2157 just recently, see if that resolves this. Please report on any issues/ideas for improvement.

[jurgenwerk]

@burieberry perfect, thank you.