Fix: Render HTML in dataset explorer long description

[Swargambharath987]

Fixes
#1164

The long description field in the dataset explorer result card was using .textContent, which renders HTML tags as plain text. Changed to .innerHTML so descriptions
with embedded HTML are rendered correctly, consistent with how the Dataset Information dialog already handles it.

[jorvis]

Thanks for your contribution here! I like this change. Did you happen to check if it passes a cycle of edit, save, and display again with embedded html?

[Swargambharath987]

Thanks for checking @jorvis! I looked at the code and line 625 in the same file covers the after-save update path as well, so both the initial render and the edit/display cycle should be handled. That said, I haven't been able to test it on a live instance, happy to update if you spot anything!