Reapply "[fuzzer][Fuchsia] Prevent deadlock from suspending threads" … (#155271)

…(#155042)

This reverts commit 781a4db6b50bb660cb293d3e7e29957aeb4b02ac.

Relanded with the fix declaring StartRssThread.

GitOrigin-RevId: 7153392a1089107d419ae9234486263b748b9e88
2 files changed