test(webapp): move hashBucket test into test/ so vitest includes it

Author: nicktrn

…s/webapp/app/utils/computeBucket.test.ts apps/webapp/test/computeBucket.test.tsapps/webapp/app/utils/computeBucket.test.ts renamed to apps/webapp/test/computeBucket.test.ts apps/webapp/app/utils/computeBucket.test.ts renamed to apps/webapp/test/computeBucket.test.ts

@@ -1,5 +1,5 @@
 import { describe, it, expect } from "vitest";
-import { hashBucket } from "./computeBucket";
+import { hashBucket } from "~/utils/computeBucket";
 
 describe("hashBucket", () => {
   it("returns a stable value in [0, 100) for the same id", () => {