Fix two unused block warnings in arel

This will always forward the block: https://github.com/rails/rails/blob/f1e610ec20532a1fdce6d3ce94d8d610bca48d89/activerecord/lib/arel.rb#L68-L72
but these two ignore it

Same with `add_bind`/`add_binds`, they may also be passed a block:
https://github.com/rails/rails/blob/f1e610ec20532a1fdce6d3ce94d8d610bca48d89/activerecord/lib/arel/visitors/to_sql.rb#L756-L762
https://github.com/rails/rails/blob/f1e610ec20532a1fdce6d3ce94d8d610bca48d89/activerecord/lib/arel/visitors/to_sql.rb#L352

Author: Earlopain

activerecord/lib/active_record/statement_cache.rb

@@ -74,13 +74,13 @@ def <<(str)
         self
       end
 
-      def add_bind(obj)
+      def add_bind(obj, &_)
         @binds << obj
         @parts << Substitute.new
         self
       end
 
-      def add_binds(binds, proc_for_binds = nil)
+      def add_binds(binds, proc_for_binds = nil, &_)
         @binds.concat proc_for_binds ? binds.map(&proc_for_binds) : binds
         binds.size.times do |i|
           @parts << ", " unless i == 0

activerecord/lib/arel/collectors/bind.rb

@@ -18,7 +18,7 @@ def add_bind(bind, &)
         self
       end
 
-      def add_binds(binds, proc_for_binds = nil)
+      def add_binds(binds, proc_for_binds = nil, &_)
         @binds.concat proc_for_binds ? binds.map(&proc_for_binds) : binds
         self
       end

activerecord/lib/arel/collectors/sql_string.rb

@@ -12,7 +12,7 @@ def initialize(*)
         @bind_index = 1
       end
 
-      def add_bind(bind)
+      def add_bind(bind, &_)
         self << yield(@bind_index)
         @bind_index += 1
         self

activerecord/lib/arel/collectors/substitute_binds.rb

@@ -15,12 +15,12 @@ def <<(str)
         self
       end
 
-      def add_bind(bind)
+      def add_bind(bind, &_)
         bind = bind.value_for_database if bind.respond_to?(:value_for_database)
         self << quoter.quote(bind)
       end
 
-      def add_binds(binds, proc_for_binds = nil)
+      def add_binds(binds, proc_for_binds = nil, &_)
         self << binds.map { |bind| quoter.quote(bind) }.join(", ")
       end
 

activerecord/lib/arel/nodes/binary.rb

@@ -30,7 +30,7 @@ def eql?(other)
     end
 
     module FetchAttribute
-      def fetch_attribute
+      def fetch_attribute(&)
         if left.is_a?(Arel::Attributes::Attribute)
           yield left
         elsif right.is_a?(Arel::Attributes::Attribute)

activerecord/lib/arel/nodes/node.rb

@@ -152,7 +152,7 @@ def to_sql(engine = Table.engine)
         end
       end
 
-      def fetch_attribute
+      def fetch_attribute(&_)
       end
 
       def equality?; false; end

activerecord/lib/arel/nodes/sql_literal.rb

@@ -19,7 +19,7 @@ def encode_with(coder)
         coder.scalar = self.to_s
       end
 
-      def fetch_attribute
+      def fetch_attribute(&_)
       end
 
       def +(other)