This changes the ARM64-specific {TurboAssembler::AssertSpAligned} helper
to not generate calls to the {Abort} builtin. It is needed to ensure all
WebAssembly runtime stubs (e.g. {WasmGrowMemory}) are independent of the
Isolate. In general calling the {Abort} builtin without a valid frame
being present will produce bogus debug messages anyways. Hence we just
unconditionally use traps for the debug code in question.

R=sigurds@chromium.org

Change-Id: I93eb87e8b87209da8506c9b28e2c800950d1118a
Reviewed-on: https://chromium-review.googlesource.com/1140170
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54496}