Gravity Tests Crash on HTML5

[STREGA]

The test executable crashes during tests involving Gravity scripts at WASIPlatform.fetch()
Deferring solving this bug until it gets hit in a GateEngine project where more information might be available in output.

Debugging Discoveries
The crash occurs after JSPromise.value returns and before the retuned value is stored.

Thoughts:

• The debugging results could indicate an exception on another thread
• Sometimes fetch does return once, so again probably a threading issue
• SwiftWASM doesn't support threading, but does use a Javascript worker.

The crash trace:

<?>.wasm-function[swift_task_asyncMainDrainQueueImpl()]@[wasm code]
<?>.wasm-function[swift_task_asyncMainDrainQueue]@[wasm code]
<?>.wasm-function[XCTMainRunLoopMain]@[wasm code]
<?>.wasm-function[$s6XCTest7XCTMain_9arguments9observersySayAA0A4CaseCm04testE5Class_SaySS_yAFKctG8allTeststG_SaySSGSayAA0A11Observation_pGtF]@[wasm code]
<?>.wasm-function[$s6XCTest7XCTMainyySayAA0A4CaseCm04testC5Class_SaySS_yADKctG8allTeststGF]@[wasm code]
<?>.wasm-function[$s22GateEnginePackageTests6RunnerV4mainyyFZ]@[wasm code]
<?>.wasm-function[$s22GateEnginePackageTests6RunnerV5$mainyyFZ]@[wasm code]
<?>.wasm-function[main]@[wasm code]
wasm-stub@[wasm code]
49869@[native code]
@http://127.0.0.1:8080/test.js:8948:30

Tests involving gravity are disabled on HTML5 using a package define DISABLE_GRAVITY_TESTS