Fix rendering of empty extra_fields div

[glenn-sorrentino]

Motivation:
On accounts with no extra fields defined, the containing div was still rendering.

Example:

Fix:
In the original code, the if condition checked for defined labels and values, but the div still rendered even if no valid fields existed. Introduced valid_fields, a filtered list of extra_fields using selectattr('value'), which removes fields without valid values. This ensures only fields with both defined label and non-empty value are processed.

Instead of just rendering the div based on the presence of any label/value, I added valid_fields | length > 0 to check if any valid fields exist before rendering the div. This prevents rendering an empty div.

Updated Screenshot: