chore(decrypt-progress): drop dead class and orphan i18n key

- Remove `class:indeterminate` directive on the bar track — no
  matching rule exists; the indeterminate visual lives on the inner
  `.bar-indeterminate` element.
- Remove the now-unreferenced `filesharing.decryptpanel.decrypting`
  key from en.json and nl.json (the download page swapped its
  spinner+text for the DecryptionProgress component).

Author: rubenhensen

src/lib/components/filesharing/DecryptionProgress.svelte

@@ -14,7 +14,7 @@
     <p class="label">
         {$_('filesharing.decryptpanel.downloadingAndDecrypting')}
     </p>
-    <div class="bar-track" class:indeterminate={!determinate}>
+    <div class="bar-track">
         {#if determinate}
             <div
                 class="bar-fill"

src/lib/locales/en.json

@@ -156,7 +156,6 @@
             "irmaInstructionQr": "Decrypt the files by verifying your e-mail address. Scan the QR code below with the free Yivi app on your phone.",
             "irmaInstructionMobile": "Decrypt the files by verifying your e-mail address. Please click the button below to open the Yivi-app.",
             "noIrma": "Don't have the Yivi-app yet?",
-            "decrypting": "Your files are being downloaded and decrypted afterwards.",
             "downloadingAndDecrypting": "Downloading and decrypting locally…",
             "succes": "Successfully downloaded and decrypted",
             "askDownload": "Download",

src/lib/locales/nl.json

@@ -156,7 +156,6 @@
             "irmaInstructionQr": "Ontsleutel de bestanden door je e-mailadres te verifiëren. Scan de onderstaande QR-code met de gratis Yivi-app op je telefoon.",
             "irmaInstructionMobile": "Ontsleutel het bestand door je e-mailadres te tonen. Click daarvoor op de onderstaande knop om naar de identificatie app Yivi te gaan.",
             "noIrma": "Nog geen Yivi-app?",
-            "decrypting": "Jouw bestand wordt gedownload en vervolgens ontsleuteld.",
             "downloadingAndDecrypting": "Bezig met downloaden en lokaal ontsleutelen…",
             "succes": "Succesvol gedownload en ontsleuteld",
             "askDownload": "Download",