Suppress coverage_sanitizer on Fuzzilli::initializeCoverage(). If we don't do this, a crash occurs trying to collect coverage data while initializing coverage. <rdar://118908398>
Pull request: https://github.com/WebKit/WebKit/pull/21043
Committed 271277@main (df1c826fa3da): <https://commits.webkit.org/271277@main> Reviewed commits have been landed. Closing PR #21043 and removing active labels.