[Bug] Fixing crash that can occur when loading variant sprite,

[podarsmarty]

What are the changes the user will see?

• Crash will no longer happen

Why am I making these changes?

• Game can crash when failing to load variant sprites

What are the changes from a developer perspective?

• Upon and error, attempt to fall back to non-experimental sprite. If that fails as well the additional error handling will prevent the game from crashing.
• similar issue to [Bug] Using default animation for errors that occur. #4266

How to test the changes?

• Turn on experimental sprites.
• With the following save, after evolving can observe the error. With loading from website response error handling will work. However, if an error is thrown without a response then crash happens (ie - happens in the offline client more readily)
  sessionData_Guest-evolve-crash.prsv.zip

Bug reports

• [Bug] Crash that can occur when loading variant sprite #4316
• Discord issue that covers multiple similar crashes: https://discord.com/channels/1125469663833370665/1282438230578430073

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)
• Are the changes visual?
  • Have I provided screenshots/videos of the changes?

[podarsmarty]

Should be behaving properly. when testing i noticed some weirdness with experimental variation loading. will put up a separate pr for that

[podarsmarty]

hmm tests are failing on CI but fine on local. taking a look. not sure whats happening yet