Improve blocked view of profiles (#10491)

* Revert "Fix filtering of favourited_by, reblogged_by, followers and following (#10447)"

This reverts commit 120544067f.

* Revert "Hide blocking accounts from blocked users (#10442)"

This reverts commit 62bafa20a1.

* Improve blocked view of profiles

- Change "You are blocked" to "Profile unavailable"
- Hide following/followers in API when blocked
- Disable follow button and show "Profile unavailable" on public profile as well

app/models/account.rb

@@ -98,7 +98,6 @@ class Account < ApplicationRecord
   scope :tagged_with, ->(tag) { joins(:accounts_tags).where(accounts_tags: { tag_id: tag }) }
   scope :by_recent_status, -> { order(Arel.sql('(case when account_stats.last_status_at is null then 1 else 0 end) asc, account_stats.last_status_at desc')) }
   scope :popular, -> { order('account_stats.followers_count desc') }
-  scope :without_blocking, ->(account) { account.nil? ? all : where.not(id: Block.where(target_account_id: account.id).pluck(:account_id)) }
 
   delegate :email,
            :unconfirmed_email,