Fix 32bit testing

[QuLogic]

Or really, it's more of a workaround, by simply disabling the tests that can't run, as mentioned in #2824.

[aykevl]

The syscall.seek issue will be fixed by #3103.

I can reproduce the "out of memory" issue on my laptop though:

$ GOARCH=arm tinygo test -v compress/flate
panic: runtime error: out of memory
qemu: uncaught target signal 6 (Aborted) - core dumped
FAIL    compress/flate  1337.215s
FAIL

Not sure what's causing it, as both amd64 and 386 should have a heap size of 1GB. Also, I don't see why compress/flate would use such a large amount of RAM during tests. Perhaps the GC has too many false positives so it keeps memory around?