Missing negative array size check in `Slice#allocate`

[kasiafi]

This is a public method. Experience would be better if negative array size produced a user-friendly message, similar to the one we get for too large size.

https://github.com/airlift/slice/blob/master/src/main/java/io/airlift/slice/Slices.java#L83:L92

On negative size, throws

java.lang.NegativeArraySizeException: -2147483636
	at io.airlift.slice.Slices.allocate(Slices.java:91)
	at io.trino.execution.buffer.PageSerializer$WriteBuffer.<init>(PageSerializer.java:626)
	at io.trino.execution.buffer.PageSerializer$SerializedPageOutput.startPage(PageSerializer.java:154)
	at io.trino.execution.buffer.PageSerializer.serialize(PageSerializer.java:83)
	at io.trino.spiller.FileSingleStreamSpiller.writePages(FileSingleStreamSpiller.java:157)
	at io.trino.spiller.FileSingleStreamSpiller.lambda$spill$0(FileSingleStreamSpiller.java:123)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)
	at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:131)
	at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:76)
	at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:82)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.lang.Thread.run(Thread.java:1583)