Check component props for untranslated literals, and fail on a finding

i18n-literals checked title, aria-label, placeholder and alt on elements,
but not the same English passed to a component, so a MenuItem label or a
Popover ariaLabel written as a literal went through. It also excused a
literal that happened to be a catalogue key. That exemption is meant for
English held in a constant and translated where it renders, and a literal
written straight into a JSX attribute has no such render site. No
component passes its props through t(). And neither half of i18n:check
was run with --check, so a finding printed and the script still exited 0.

Component props are checked now, a key no longer excuses a literal in an
attribute, and both scripts run with --check. That found 28 strings
rendering English in every language: 19 already had keys and are wrapped,
and 9 are new keys in all nine catalogues. The contact editor's Save and
Saving… buttons are wrapped as well, on the same line.

web/src/views/contacts/ContactEditor.tsx

@@ -156,7 +156,7 @@ export function ContactEditor({ card, defaultBookId, onClose, onSaved }: Props)
   const photoSrc = photo?.dataUrl ?? (!removePhoto && existingPhoto ? (existingPhoto.uri?.startsWith("data:") ? existingPhoto.uri : existingPhoto.blobId ? client.downloadUrl(contacts.accountId!, existingPhoto.blobId, "photo", existingPhoto.mediaType ?? "image/jpeg", true) : null) : null);
 
   return (
-    <Dialog open onClose={onClose} title={isNew ? "New contact" : `Edit ${contactDisplayName(card as ContactCard)}`} size="lg" footer={<><button className="btn" onClick={onClose}>{t("Cancel")}</button><button className="btn btn-primary" disabled={busy} onClick={() => void save()}>{busy ? "Saving…" : "Save"}</button></>}>
+    <Dialog open onClose={onClose} title={isNew ? t("New contact") : `Edit ${contactDisplayName(card as ContactCard)}`} size="lg" footer={<><button className="btn" onClick={onClose}>{t("Cancel")}</button><button className="btn btn-primary" disabled={busy} onClick={() => void save()}>{busy ? t("Saving…") : t("Save")}</button></>}>
       <div className="contact-form">
         <div className="row" style={{ gap: 16, marginBottom: 12 }}>
           <label className="avatar xl" style={{ background: "var(--bg-sunken)", color: "var(--fg-muted)", cursor: "pointer", position: "relative" }} title={t("Change photo")}>