put back Any16 and All16 since some packges seem to rely on it (#41469)

(cherry picked from commit 261906c)

Author: KristofferC

base/deprecated.jl

@@ -240,6 +240,12 @@ end
 @deprecate cat_shape(dims, shape::Tuple{}, shapes::Tuple...) cat_shape(dims, shapes) false
 cat_shape(dims, shape::Tuple{}) = () # make sure `cat_shape(dims, ())` do not recursively calls itself
 
+# these were internal type aliases, but some pacakges seem to be relying on them
+const Any16{N} = Tuple{Any,Any,Any,Any,Any,Any,Any,Any,
+                        Any,Any,Any,Any,Any,Any,Any,Any,Vararg{Any,N}}
+const All16{T,N} = Tuple{T,T,T,T,T,T,T,T,
+                         T,T,T,T,T,T,T,T,Vararg{T,N}}
+
 # END 1.6 deprecations
 
 # BEGIN 1.7 deprecations