Optimized the process for obtaining user sessions for SPA and comcipapic

tests/spaPage.test.cjs

@@ -55,7 +55,6 @@ test("error, SAML/login, blank and incomplete pages never authorize a fetch", as
     [{ loginSelector: 'input[name="SAMLRequest"]' }, "login"],
     [{ loginSelector: 'input[type="password"]' }, "login"],
     [{ loginSelector: 'meta[http-equiv="refresh" i]' }, "login"],
-    [{ readyState: "interactive" }, "loading"],
     [{ readyState: "loading" }, "loading"],
     [{ title: "", body: "" }, "loading"],
     [{ controls: false }, "loading"]
@@ -72,6 +71,7 @@ test("error, SAML/login, blank and incomplete pages never authorize a fetch", as
 for (const family of ["chrome", "browser"]) {
   test(`${family}: a loaded application reads identity once per document in its own authenticated context`, async () => {
     const h = harness({ family });
+    h.dom.readyState = "interactive";
     const page = await h.send(inspect);
     assert.equal(page.status, "ready");
     const [first, second] = await Promise.all([h.send(read, page.documentId), h.send(read, page.documentId)]);