Typo in filter hook name: friends_activity_friendsip_accepted_action should be friends_activity_friendship_accepted_action

[khushipatel15]

There's a typo in the filter hook name used in the BuddyPress Friends component. The current hook is:
apply_filters( 'friends_activity_friendsip_accepted_action', $action, $friendship );
The word "friendsip" is misspelled and should be "friendship", which could cause issues for developers trying to hook into this filter with the correct spelling.
Since changing a filter hook name can potentially break backward compatibility for developers already using the incorrect one.

[khushipatel15]

This patch fixes a typo in the filter hook name used when generating the "friendship accepted" activity action in the BuddyPress Friends component.

[espellcaste]

Patch looks look but incomplete. Besides updating the hook name, we will properly deprecate it in 15.0. This is a very old hook from [8125].

[espellcaste]

In 14163:

Fix a typo in the friends_activity_friendship_accepted_action hook and deprecate it.

Fix a typo in the filter hook name: friends_activity_friendsip_accepted_action which should be friends_activity_friendship_accepted_action.

The hook was also properly deprecated and will be removed in a future release.

Originally at [8125].

Props khushipatel15.

Fixes #9280.