Profile tab links use user_login instead of user_nicename

[axl4life]

On LearnPress profile pages, some tab links are generated using user_login instead of user_nicename (the profile URL slug).
This is not an issue when both values are the same.
When they differ, generated tab links can use the wrong profile segment, and tab content can appear empty or not be rendered.

Example

• user_login: test-user.tester
• user_nicename: test-user-tester

Test URL:
/lp_profile/test-user.tester/orders_woocommerce/ vs /lp_profile/test-user-tester/orders_woocommerce/ vs

Where to check

• learn_press_user_profile_link
• LearnPress profile tab link generation