[browser] Consider debug levels less than zero disabled

[lewing]

fixes #40428

[ghost]

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[lewing]

linker test failures look similar to #40398

None of the test failures could be caused by the unmanaged wasm only change.

[BrzVlad]

Note that -1 is passed both for release, as well when starting with debugging in debug mode. Is this expected ? Do we currently not support debugging at all ?

[lewing]

Debugging works. I remember the details now. We were using -1 as debugging enabled but with no logging so this should be reverted. If the intent is disable disable debugging when running in release mode in VS blazor will need to pass 0 to the load_runtime call.

cc @pranavkm .