Sending a Like/Announce activity should pick the actor's followers collection.

[purifetchi]

For now when we send a Like/Announce to a post, we render the followers collection of the actor who's made the Note, which is... wrong. Instead we should render the collection of the actor who made the activity, and attach the receiving actor in the "to" field.

{
    "@context":
    [
        "https://www.w3.org/ns/activitystreams",
        "https://w3id.org/security/v1",
        {
            "Bite": "https://ns.mia.jetzt/as#Bite",
            "Emoji": "toot:Emoji",
            "EmojiReact": "litepub:EmojiReact",
            "Hashtag": "as:Hashtag",
            "PropertyValue": "schema:PropertyValue",
            "fedibird": "http://fedibird.com/ns#",
            "sensitive": "as:sensitive",
            "toot": "http://joinmastodon.org/ns#",
            "value": "schema:value",
            "isCat": "https://misskey-hub.net/ns#isCat",
            "litepub": "http://litepub.social/ns#",
            "manuallyApprovesFollowers": "as:manuallyApprovesFollowers",
            "quoteUri": "fedibird:quoteUri",
            "schema": "http://schema.org#"
        }
    ],
    "actor": "https://testpilot.shinolabs.com/users/prefetcher",
    "object": "https://miku.place/objects/931c458c-03f9-43ba-84cb-585b2b706a17",
    "to":
    [
        "https://www.w3.org/ns/activitystreams#Public",
        "https://testpilot.shinolabs.com/users/prefetcher@miku.place/followers"
    ],
    "id": "https://testpilot.shinolabs.com/users/prefetcher#likes/01HVH4M8XZ6PMJRHJ29F5G93E9",
    "type": "Like",
    "published": "2024-04-16T10:23:09.3652372+00:00"
}