[Dev] Sessions will now sync with the server at the start of every 5 waves

[frutescens]

What are the changes the user will see?

None, ideally.

Why am I making these changes?

Requested.

What are the changes from a developer perspective?

The updateAll function call found in encounter-phase had a conditional to determine whether the game should sync to the server or not. The modulo used to use 10; now it uses 5.
Sessions should now save on wave 1, X6, and X11.

How to test the changes?

1. Play 5 waves.
2. Change devices when starting a new wave.
3. New device should have progress up to the 6th wave.

Checklist

• I'm using beta as my base branch
• There is no overlap with another PR?
• The PR is self-contained and cannot be split into smaller PRs?
• Have I provided a clear explanation of the changes?
• Have I considered writing automated tests for the issue?
• If I have text, did I make it translatable and add a key in the English locale file(s)?
• Have I tested the changes (manually)?
  • Are all unit tests still passing? (npm run test)

[MokaStitcher]

Approving but we should be waiting on Walker's / Pancakes' final go-ahead before merging