Apply suggestions from code review

Author: oxinabox

test/activate_set.jl

@@ -7,7 +7,7 @@
             TestEnv.activate("ChainRulesCore")
             new_project_toml_path = Base.active_project()
             @test new_project_toml_path != orig_project_toml_path
-            @test orig_load_path ⊆ Base.LOAD_PATH
+            @test orig_load_path == Base.LOAD_PATH
 
             @eval using StaticArrays  # From ChainRulesCore [extras] Project.toml
             @test isdefined(@__MODULE__, :StaticArrays)
@@ -30,7 +30,7 @@
             TestEnv.activate("YAXArrays")
             new_project_toml_path = Base.active_project()
             @test new_project_toml_path != orig_project_toml_path
-            @test orig_load_path ⊆ Base.LOAD_PATH
+            @test orig_load_path == Base.LOAD_PATH
 
             @eval using CSV
             @test isdefined(@__MODULE__, :CSV)
@@ -39,4 +39,4 @@
             Pkg.activate(orig_project_toml_path)
         end
     end
-end
+end