fix(lib-classifier): expire classification session IDs

[eatyourgreens]

• fix the session ID tests so that they fail properly.
• fix getSessionID to pass the tests, by expiring a session ID after five minutes of inactivity.
• refactor generateSessionID so that it generates a session ID.
• refresh the session TTL whenever an annotation is updated.
• I added storedSession() and newSession() functions, to make it a little clearer what the code is doing.
• store/utils/session.js is now an ES module that can be copied straight into PFE. PFE and the monorepo both share the same session_id object in session storage, so the session code has to be synchronised for both repo's.

Please request review from @zooniverse/frontend team or an individual member of that team.

Package

• lib-classifier

Linked Issue and/or Talk Post

• fixes Classification session IDs don't expire after 5 minutes of inactivity #6503.
• linked discussion: Standardize third party libraries for generating string hash and unique ids #6493 (comment)
• this PR is an alternative to Classifier: Remove the faulty session id code #6499, which sets a constant session ID for all classifications made in the same tab, regardless of inactivity.

How to Review

All classifications made in a single session should still have the same session ID here. The difference from #6499 is that a new session ID should be generated if you do nothing for 5 minutes. It should be possible to record multiple classification sessions from a single browser session in the same tab.

Checklist

PR Creator - Please cater the checklist to fit the review needed for your code changes.
PR Reviewer - Use the checklist during your review. Each point should be checkmarked or discussed before PR approval.

General

• Tests are passing locally and on Github
• Documentation is up to date and changelog has been updated if appropriate
• You can yarn panic && yarn bootstrap or docker-compose up --build and FEM works as expected
• FEM works in all major desktop browsers: Firefox, Chrome, Edge, Safari (Use Browserstack account as needed)
• FEM works in a mobile browser

General UX

Example Staging Project: i-fancy-cats

• All pages of a FEM project load: Home Page, Classify Page, and About Pages
• Can submit a classification
• Can sign-in and sign-out
• The component is accessible
  • Can be used with a screen reader BBC guide to VoiceOver
  • Can be used from the keyboard WebAIM guide to keyboard testing
  • It is passing accessibility checks in the storybook

Bug Fix

• The PR creator has listed user actions to use when testing if bug is fixed
• The bug is fixed
• Unit tests are added or updated

[coveralls]

coverage: 77.798% (-0.02%) from 77.818%
when pulling 509481e on eatyourgreens:fix-session-id
into 9294f0c on zooniverse:master.

[eatyourgreens]

These lines are left over from when I was debugging expired auth sessions in Beyond Borders, a long time ago. I forgot to remove them when I was finished.

[goplayoutside3]

I'll take a look at the unit test strategy in this PR, but I'll be asking for review of #6499 instead of introducing new behavior to the classifier. Session ids have never refreshed after 5min of activity in the PFE classifier or the FEM classifier, so this PR would be changing the behavior after a decade of research.

[goplayoutside3]

Superseded by #6499