feat: Ability to block contacts permanently (#8922)

Co-authored-by: Pranav <pranav@chatwoot.com>

app/models/conversation.rb

@@ -61,6 +61,7 @@ class Conversation < ApplicationRecord
 
   validates :account_id, presence: true
   validates :inbox_id, presence: true
+  validates :contact_id, presence: true
   before_validation :validate_additional_attributes
   validates :additional_attributes, jsonb_attributes_length: true
   validates :custom_attributes, jsonb_attributes_length: true
@@ -103,7 +104,7 @@ class Conversation < ApplicationRecord
   has_many :attachments, through: :messages
 
   before_save :ensure_snooze_until_reset
-  before_create :mark_conversation_pending_if_bot
+  before_create :determine_conversation_status
   before_create :ensure_waiting_since
 
   after_update_commit :execute_after_update_commit_callbacks
@@ -226,7 +227,9 @@ class Conversation < ApplicationRecord
     self.additional_attributes = {} unless additional_attributes.is_a?(Hash)
   end
 
-  def mark_conversation_pending_if_bot
+  def determine_conversation_status
+    self.status = :resolved and return if contact.blocked?
+
     # Message template hooks aren't executed for conversations from campaigns
     # So making these conversations open for agent visibility
     return if campaign.present?