Don't open mailto: and internal links in a new tab

target="_blank" on mailto: links leaves an empty tab behind. In blog
posts, only links to other sites now open in a new tab.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/app/[locale]/blog/[slug]/page.tsx

@@ -102,12 +102,15 @@ const components: PortableTextComponents = {
       const href = getSafeHref(value?.href)
       if (!href) return <>{children}</>
 
+      // Only links to other sites open in a new tab, not mailto: or links
+      // within this site
+      const isExternal = /^https?:\/\//i.test(href)
+
       return (
         <a
           href={href}
-          target="_blank"
-          rel="noopener noreferrer"
           className={styles.link}
+          {...(isExternal && { target: "_blank", rel: "noopener noreferrer" })}
         >
           {children}
         </a>

src/components/page-sections/contact.tsx

@@ -22,9 +22,7 @@ const Contact = () => {
       <div className={styles.container}>
         <div className={styles.item}>
           <FaAt />
-          <a href="mailto:styret@uiogaming.no" target="_blank" rel="noreferrer">
-            {t("email")}
-          </a>
+          <a href="mailto:styret@uiogaming.no">{t("email")}</a>
         </div>
         <div className={styles.item}>
           <FaDiscord />