Migrate emails to the unified react-email package

Replace the deprecated @react-email/components dependency (and its
deprecated sub-packages) with the unified react-email package per the
React Email 6 migration, updating all component and render imports across
the email templates from "@react-email/components" to "react-email".

This removes the npm deprecation warnings emitted by the old
@react-email/* packages while keeping the template build output
unchanged.

Signed-off-by: Sacha Al Himdani <sacha@probo.com>

packages/emails/scripts/build.ts

@@ -12,7 +12,7 @@
 // OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 // PERFORMANCE OF THIS SOFTWARE.
 
-import { render } from "@react-email/components";
+import { render } from "react-email";
 import { copyFile, mkdir, writeFile } from "node:fs/promises";
 import { dirname, join } from "node:path";
 import { fileURLToPath } from "node:url";