✅(tokens) mock default tokens in tests

If we don't do that we will have to update all tests each time the
default value of a token is changed.

packages/tokens/src/bin/Generators/CssGenerator.spec.ts

@@ -24,8 +24,8 @@ describe("CssGenerator", () => {
     await run(["", "", "-g", "css", opt, "html"]);
     expect(fs.existsSync(cssTokensFile)).toEqual(true);
     expect(fs.readFileSync(cssTokensFile).toString()).toEqual(`html {
-\t--c--colors--primary: #055FD2;
-\t--c--colors--secondary: #DA0000;
+\t--c--theme--colors--primary: #055FD2;
+\t--c--theme--colors--secondary: #DA0000;
 }`);
   };