refactor(class): disable experimental warning for internal modules

This warning is only important for 3rd party users.

imports/class/shared.lua

@@ -1,5 +1,9 @@
 ---@diagnostic disable: invisible
-lib.print.warn('ox_lib\'s class module is experimental and may break without warning.')
+local getinfo = debug.getinfo
+
+if not getinfo(1, 'S').source:match('^@@ox_lib') then
+    lib.print.warn('ox_lib\'s class module is experimental and may break without warning.')
+end
 
 ---Ensure the given argument or property has a valid type, otherwise throwing an error.
 ---@param id number | string
@@ -31,7 +35,6 @@ end
 ---@field protected constructor? OxClassConstructor
 local mixins = {}
 local constructors = {}
-local getinfo = debug.getinfo
 
 ---Somewhat hacky way to remove the constructor from the class.__index.
 ---Maybe add static fields in the future?