add: ActiveRecord::QueryMethods::WhereChain#missing

Added `ActiveRecord::QueryMethods::WhereChain#missing` in version 6.1 or later.

Fixed to return `::ActiveRecord::QueryMethods::WhereChain` when the `where` method has no argument.

gems/activerecord/6.0/activerecord.rbs

@@ -298,7 +298,8 @@ module ActiveRecord
       def none: () -> self
       def pluck: (Symbol | String column) -> Array[untyped]
               | (*Symbol | String columns) -> Array[Array[untyped]]
-      def where: (*untyped) -> self
+      def where: () -> ::ActiveRecord::QueryMethods::WhereChain
+               | (*untyped) -> self
       def not: (*untyped) -> self
       def exists?: (*untyped) -> bool
       def order: (*untyped) -> self
@@ -377,7 +378,8 @@ module ActiveRecord
       def none: () -> Relation
       def pluck: (Symbol | String column) -> Array[untyped]
               | (*Symbol | String columns) -> Array[Array[untyped]]
-      def where: (*untyped) -> Relation
+      def where: () -> ::ActiveRecord::QueryMethods::WhereChain
+               | (*untyped) -> Relation
       def exists?: (*untyped) -> bool
       def any?: () -> bool
               | () { (Model) -> boolish } -> bool
@@ -461,7 +463,8 @@ interface _ActiveRecord_Relation[Model, PrimaryKey]
   def none: () -> self
   def pluck: (Symbol | String column) -> Array[untyped]
            | (*Symbol | String columns) -> Array[Array[untyped]]
-  def where: (*untyped) -> self
+  def where: () -> ::ActiveRecord::QueryMethods::WhereChain
+           | (*untyped) -> self
   def not: (*untyped) -> self
   def exists?: (*untyped) -> bool
   def order: (*untyped) -> self
@@ -539,7 +542,8 @@ interface _ActiveRecord_Relation_ClassMethods[Model, Relation, PrimaryKey]
   def none: () -> Relation
   def pluck: (Symbol | String column) -> Array[untyped]
            | (*Symbol | String columns) -> Array[Array[untyped]]
-  def where: (*untyped) -> Relation
+  def where: () -> ::ActiveRecord::QueryMethods::WhereChain
+           | (*untyped) -> Relation
   def exists?: (*untyped) -> bool
   def any?: () -> bool
           | () { (Model) -> boolish } -> bool

gems/activerecord/6.1/activerecord-6.1.rbs

@@ -31,4 +31,10 @@ module ActiveRecord
   class MismatchedForeignKey < StatementInvalid
     def initialize: (?primary_key_column: untyped? primary_key_column, ?primary_key: untyped? primary_key, ?target_table: untyped? target_table, ?foreign_key: untyped? foreign_key, ?table: untyped? table, ?binds: untyped? binds, ?sql: untyped? sql, ?message: untyped? message) -> untyped
   end
+
+  module QueryMethods
+    class WhereChain
+      def missing: (*Symbol associations) -> Relation
+    end
+  end
 end

gems/activerecord/7.0/activerecord-7.0.rbs

@@ -24,6 +24,12 @@ module ActiveRecord
     extend RuntimeRegistry
   end
 
+  module QueryMethods
+    class WhereChain
+      def missing: (*Symbol associations) -> Relation
+    end
+  end
+
   module Encryption
     module EncryptableRecord
       module ClassMethods

gems/activerecord/7.1/activerecord-7.1.rbs

@@ -26,6 +26,12 @@ module ActiveRecord
     extend RuntimeRegistry
   end
 
+  module QueryMethods
+    class WhereChain
+      def missing: (*Symbol associations) -> Relation
+    end
+  end
+
   module Encryption
     module EncryptableRecord
       module ClassMethods