fix: license widget checkbox and link

[khudym]

Description

• The "Share alike" checkbox now works correctly after selecting and saving it.
• The "View license details" link is only displayed for Creative Commons license type.

Steps to reproduce

Basic setup Go to studio -> unit -> Video block -> scroll to the end of editors page and click on the "Add a license for this video" button.

1. "Share alike" issue:

basic setup -> in the "License type" field select "Creative Commons" -> Check Share alive (No derivatives unchecked) -> save -> open for edit again

ACTUAL RESULT: Share Alike option is displayed as unchecked

EXPECTED RESULT: Share Alike option is displayed as checked

2. "View license details link" issue:

basic setup -> in the "License type" field select "All Rights Reserved".

ACTUAL RESULT: View license details with link to https://creativecommons.org/about/ is displayed below

EXPECTED RESULT: this link only displayed for Creative Commons license type

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 88.92%. Comparing base (6a58779) to head (65eefec). Report is 20 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #486 +/- ## ========================================== + Coverage 88.84% 88.92% +0.07% ========================================== Files 248 248 Lines 4529 4540 +11 Branches 928 943 +15 ========================================== + Hits 4024 4037 +13 + Misses 474 470 -4 - Partials 31 33 +2 ```

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