signal-desktop: force 90 days expiration (#481094)

diff --git a/ts/scripts/get-expire-time.node.ts b/ts/scripts/get-expire-time.node.ts

index 7938f74d3..9d427977d 100644

--- a/ts/scripts/get-expire-time.node.ts

+++ b/ts/scripts/get-expire-time.node.ts

@@ -18,7 +18,7 @@ const buildCreation = unixTimestamp * 1000;

 // NB: Build expirations are also determined via users' auto-update settings; see

 // getExpirationTimestamp

-const validDuration = isNotUpdatable(version) ? DAY * 30 : DAY * 90;

+const validDuration = DAY * 90;

 const buildExpiration = buildCreation + validDuration;

 const localProductionPath = join(

diff --git a/ts/util/buildExpiration.std.ts b/ts/util/buildExpiration.std.ts

index 530443ec7..26cb03d7c 100644

--- a/ts/util/buildExpiration.std.ts

+++ b/ts/util/buildExpiration.std.ts

@@ -70,9 +70,7 @@ export function hasBuildExpired({

     return true;

   }

-  const safeExpirationMs = autoDownloadUpdate

-    ? NINETY_ONE_DAYS

-    : THIRTY_ONE_DAYS;

+  const safeExpirationMs = NINETY_ONE_DAYS;

   const buildExpirationDuration = buildExpirationTimestamp - now;

   const tooFarIntoFuture = buildExpirationDuration > safeExpirationMs;

  ];

  buildInputs = (lib.optional (!withAppleEmojis) noto-fonts-color-emoji-png);

  patches = lib.optional (!withAppleEmojis) (

  patches = [

    ./force-90-days-expiration.patch

  ]

  ++ lib.optional (!withAppleEmojis) (

    replaceVars ./replace-apple-emoji-with-noto-emoji.patch {

      noto-emoji-pngs = "${noto-fonts-color-emoji-png}/share/noto-fonts-color-emoji-png";

    }