Fix Twoslash polyfill mismatches in new 2.2 docs

Since PR #768 made Fedify's generated `.d.ts` resolve `Temporal`
through the ambient `lib.esnext.temporal` namespace, Twoslash blocks
that import `Temporal` from `@js-temporal/polyfill` and then construct
a Fedify vocab object fail with TS2322 ("until(...).sign" mismatch).
Merging 2.1.13 into 2.2-maintenance surfaced four docs added on the
2.2 line where this happens.

The rule depends on whether the polyfill import is visible to readers:

 -  Hidden by `---cut-before---` / `---cut---` (type-check-only
    context): drop the line.  The ambient `Temporal` from
    `lib.esnext.temporal` then resolves the references, leaving the
    rendered output untouched.  Done in `docs/manual/migrate.md`,
    `docs/manual/pragmatics.md`, and two cut-prefixed blocks in
    `docs/tutorial/content-sharing.md`.

 -  Visible to the reader (no cut directive): the tutorial still needs
    that line so Node 22-25 readers know to install the polyfill, so
    keep the import and add `2322` to the block's `// @Noerrors:`
    directive instead.  Done in two `docs/tutorial/content-sharing.md`
    blocks (the `server/federation.ts` "imports to add" snippet and
    the `comments.post.ts` example).

`astro-blog.md` and `microblog.md` already shield their polyfill
imports with `// @noErrors` wildcards or plain `typescript` fences,
so they don't need changes.

`vitepress build` completes locally without errors.

#767

Assisted-by: Claude Code:claude-opus-4-7

Author: dahlia

docs/manual/migrate.md

@@ -1787,8 +1787,6 @@ console.log(doc);
 With `@fedify/vocab`:
 
 ~~~~ typescript twoslash
-import { Temporal } from "@js-temporal/polyfill";
-// ---cut-before---
 import { Create, Note } from "@fedify/vocab";
 
 const create = new Create({
@@ -1942,8 +1940,6 @@ AS2 document for processing.  Drop-in replacement for the idiomatic
 `activitystrea.ms` usage in most JSON-LD bridges:
 
 ~~~~ typescript twoslash
-import { Temporal } from "@js-temporal/polyfill";
-// ---cut-before---
 import { Activity, Create, Note } from "@fedify/vocab";
 
 async function buildOutbound(

docs/manual/pragmatics.md

@@ -549,7 +549,6 @@ below the choices.
 
 ~~~~ typescript twoslash
 import { Collection, Note, Question } from "@fedify/vocab";
-import { Temporal } from "@js-temporal/polyfill";
 // ---cut-before---
 new Question({
   content: "<p>Which pragmatics example should the manual explain first?</p>",  // [!code highlight]
@@ -587,7 +586,6 @@ Use `inclusiveOptions` for polls where a voter may choose more than one option.
 
 ~~~~ typescript twoslash
 import { Collection, Note, Question } from "@fedify/vocab";
-import { Temporal } from "@js-temporal/polyfill";
 // ---cut-before---
 new Question({
   content: "<p>Which pragmatics details should the manual cover next?</p>",  // [!code highlight]

docs/tutorial/content-sharing.md

@@ -3465,7 +3465,7 @@ Open *server/federation.ts*.  Add `Document`, `Note`, and
 `Temporal` polyfill, and add `posts` to the schema import:
 
 ~~~~ typescript twoslash [server/federation.ts]
-// @noErrors: 2304 2307
+// @noErrors: 2304 2307 2322
 import {
   Accept,
   Document,
@@ -3506,7 +3506,6 @@ Then add a final dispatcher block after the followers dispatcher:
 // @noErrors: 2304 2307 7006
 import { type Federation } from "@fedify/fedify";
 import { Document, Note, PUBLIC_COLLECTION } from "@fedify/vocab";
-import { Temporal } from "@js-temporal/polyfill";
 import { and, eq } from "drizzle-orm";
 import { db } from "./db/client";
 import { posts, users } from "./db/schema";
@@ -6516,7 +6515,7 @@ and ends in the textarea form.  Append it inside the existing
 Create *server/api/comments.post.ts*:
 
 ~~~~ typescript twoslash [server/api/comments.post.ts]
-// @noErrors: 2304 2307
+// @noErrors: 2304 2307 2322
 import {
   Create,
   getActorHandle,
@@ -6706,7 +6705,6 @@ import {
   MemoryKvStore,
 } from "@fedify/fedify";
 import { Mention, Note, PUBLIC_COLLECTION } from "@fedify/vocab";
-import { Temporal } from "@js-temporal/polyfill";
 import { and, eq } from "drizzle-orm";
 import { db } from "./db/client";
 import { comments, posts, users } from "./db/schema";