Extend token lifetime to 3 days (#1172)

## Description:

Extend token lifetime from 6 hours to 3 days.

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [x] I understand that submitting code with bugs that could have been
caught through manual testing blocks releases and new features for all
contributors

Co-authored-by: Scott Anderson <662325+scottanderson@users.noreply.github.com>

src/client/jwt.ts

@@ -125,7 +125,7 @@ function _isLoggedIn(): IsLoggedInResponse {
       logOut();
       return false;
     }
-    const refreshAge: number = 6 * 3600; // 6 hours
+    const refreshAge: number = 3 * 24 * 3600; // 3 days
     if (iat !== undefined && now >= iat + refreshAge) {
       console.log("Refreshing access token...");
       postRefresh().then((success) => {