Members loop: the link to view a member's latest activity is always output even if it hasn't been truncated

[imath]

Working on optimizing BuddyPress for the Twenty Twenty-Four theme, I noticed unlike what this comment was saying:

/*
 * If `$view_link` is true and the text returned by `bp_create_excerpt()` is different
 * from the original text (ie it's been truncated), add the "View" link.
 */

The link to view the single activity is always shown, no matter the activity was truncated or not.

Improve bp_get_member_latest_update():

• removing extract() usage.
• making sure to only display a button to view the full activity if it has been truncated
• adding a new parameter to the 'bp_get_member_latest_update' filter. This parameter contains all needed data to reset the excerpt.

Trac ticket: ​https://buddypress.trac.wordpress.org/ticket/9026

[imath]

In 13647:

Only add a link to view member's latest update if it's been truncated

• Stop using extract() in bp_get_member_latest_update()
• Add a new $update parameter to the 'bp_get_member_latest_update' filter. This array contains all needed data to reset the member's latest update.

Fixes #9026
Closes ​https://github.com/buddypress/buddypress/pull/193