Translate English built from template literals in attributes

i18n-literals now flags a template literal in a UI attribute or prop when
there are words between its values: `Remove ${email}`, `${name} — shared by
${owner}`. It cannot be a catalogue key as written, so neither the key
exemption nor the sentence-shape test applies. A template that is only
punctuation around values, like `${name} (${size})`, is left alone.

The twelve it found are now keys with placeholders: the quota bar title,
the address menu's label, a folder's subfolder unread count, a recipient
chip's remove button, the contact editor's title, shared and available
calendars and address books, the date and time fields' labels, the
attachment title's fallback name, and the free/busy bar. The bar showed
the raw JMAP busyStatus ("confirmed") and now says Busy, Tentative or
Unavailable.

11 new keys in all nine catalogues. Remove {address}, Date, Time, Busy and
Tentative already existed.

web/src/views/contacts/ContactsSidebar.tsx

@@ -157,7 +157,7 @@ export function ContactsSidebar() {
           key={`${accountId}:${book.id}`}
           className={`nav-item ${isOn(accountId, book.id) ? "active" : ""}`}
           onClick={() => contacts.select({ accountId, bookId: book.id })}
-          title={`${book.name} — shared by ${accountName}`}
+          title={t("{name} — shared by {owner}", { name: book.name, owner: accountName })}
           onContextMenu={(e) => openMenuAt(e, { kind: "shared", accountId, book })}
         >
           <BookOpen size={17} />
@@ -181,7 +181,7 @@ export function ContactsSidebar() {
         <>
           <div className="nav-section"><span>{t("Available to add")}</span></div>
           {available.map(({ accountId, accountName, book }) => (
-            <div key={`${accountId}:${book.id}`} className="nav-item" title={`${book.name} — from ${accountName}`}>
+            <div key={`${accountId}:${book.id}`} className="nav-item" title={t("{name} — from {owner}", { name: book.name, owner: accountName })}>
               <BookOpen size={17} className="faint" />
               <span className="grow truncate faint">{book.name}</span>
               <button