avoid limiting Type{Any} to Type (JuliaLang#51512)

Fix JuliaLang#51510

Author: vtjnash

base/compiler/typelimits.jl

@@ -135,8 +135,8 @@ function _limit_type_size(@nospecialize(t), @nospecialize(c), sources::SimpleVec
                 ct = Union{}
             end
             Qt = __limit_type_size(tt, ct, sources, depth + 1, 0)
-            Qt === Any && return Type
             Qt === tt && return t
+            Qt === Any && return Type
             # Can't form Type{<:Qt} just yet, without first make sure we limited the depth
             # enough, since this moves Qt outside of Type for is_derived_type_from_any
             Qt = __limit_type_size(tt, ct, sources, depth + 2, 0)

test/compiler/inference.jl

@@ -121,6 +121,11 @@ end
 @test Core.Compiler.limit_type_size(Type{Union{Int,Type{Int}}}, Type{Type{Int}}, Union{}, 0, 0) == Type
 
 
+@test Core.Compiler.limit_type_size(Type{Any}, Union{}, Union{}, 0, 0) ==
+      Core.Compiler.limit_type_size(Type{Any}, Any, Union{}, 0, 0) ==
+      Core.Compiler.limit_type_size(Type{Any}, Type, Union{}, 0, 0) ==
+      Type{Any}
+
 # issue #43296 #43296
 struct C43296{t,I} end
 r43296(b) = r43296(typeof(b))