fix(shared): link duplication with render's plainText mode

[niquenen]

This pull request makes a small update to the plainTextSelectors configuration in to-plain-text.ts to improve how anchor (<a>) elements are converted to plain text. Now, if the link's href matches its text, the href will be hidden in the output to avoid text duplication.

import { Link } from "@react-email/components";

const Email = () => {
  /**
   * hideLinkHrefIfSameAsText: false
   *
   * ```
   * https://example.com
   * https://example.com
   * ```
   *
   * ---
   *
   * hideLinkHrefIfSameAsText: true
   *
   * ```
   * https://example.com
   * ```
   */
  return <Link href='https://example.com'>https://example.com</Link>;
};

See: Link - React Email

---

Summary by cubic

Prevents duplicate link text in plain‑text output. In to-plain-text, we enable hideLinkHrefIfSameAsText for anchor tags so when the href equals the link text, the href isn’t repeated.

[changeset-bot]

🦋 Changeset detected

Latest commit: cf39c19

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 3 packages

Name	Type
@react-email/render	Minor
@react-email/components	Patch
playground	Patch

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commit: cf39c19