Fix expansion of "floating" WASM variables in repl/watch + readMemory when WASM memory is SharedArrayBuffer

[mikaelwaltersson]

This PR includes bug fixes for the following issues:

• When debugging WebAssembly modules if you use the Watch or REPL to view values only the top level value will be shown, any value with children will not be viewable.
• The memory viewer does not work if the WebAssembly memory is backed by a SharedArrayBuffer

Screenshot of current behavior using the REPL to view a variable with children:

Screenshot of behavior when running this PR version:

Example code used in the the screenshots:
c-wasm-app.zip

[mikaelwaltersson]

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[connor4312]

awesome, thank you! 👏