feat(web): add Browse releases link next to invite download (#2255)

Related to https://github.com/block/buzz/issues/2093

Invite pages offered a platform-resolved binary download with no path to
the GitHub releases listing for users who wanted information first.

### Changes
- Keep the smart **Download it now** CTA
- Add an always-visible **Browse releases** link pointing at
`https://github.com/block/buzz/releases`
- Extend invite smoke coverage for the new link

Note: the marketing-site “Get the App” button on buzz.xyz appears to
live outside this repository; this improves the in-repo web invite flow.

Signed-off-by: Ian Alloway <ianalloway@usf.edu>
Signed-off-by: Fizz <300bd4cedcdddb62f77935de51c301034bdb4cd97da9aaca46d59673a1ebc7cf@buzz.block.builderlab.xyz>

web/tests/e2e/smoke.spec.ts

@@ -79,6 +79,9 @@ test("invite requires age and legal consent before opening Buzz", async ({
     "href",
     "https://github.com/block/buzz/releases/download/v0.4.9/Buzz_0.4.9_x64-setup_alpha-unsigned.exe",
   );
+  await expect(
+    page.getByRole("link", { name: "Browse releases" }),
+  ).toHaveAttribute("href", "https://github.com/block/buzz/releases");
 
   const ageConfirmation = page.getByLabel("I am 18 years of age or older.");
   const agreementConfirmation = page.getByLabel(
@@ -366,6 +369,10 @@ test("invite download links to the appropriate platform destination", async ({
       page.getByRole("link", { name: "Download it now" }),
       device.name,
     ).toHaveAttribute("href", device.expectedUrl);
+    await expect(
+      page.getByRole("link", { name: "Browse releases" }),
+      device.name,
+    ).toHaveAttribute("href", "https://github.com/block/buzz/releases");
     await context.route(device.expectedUrl, (route) =>
       route.fulfill({ contentType: "text/html", body: "Store destination" }),
     );