fix(css): leave tailwind theme vars on :root so obsidian's accent wins inside the view

tests/scope-css.test.ts

@@ -40,9 +40,9 @@ describe("scoping the built stylesheet", () => {
     expect(out).not.toContain("*)*");
   });
 
-  it("moves theme variables from :root onto the view root", () => {
+  it("leaves tailwind's theme variables on :root, under obsidian's body values", () => {
     expect(one(":root,:host{--spacing:.25rem}")).toBe(
-      ".bcal-root { --spacing: .25rem; }",
+      ":root, :host { --spacing: .25rem; }",
     );
   });