Fix hasMessageAvailable incorrectly returns true when read to latest after seeking by timestamp #947

Job	Run time
Formatting Check	1m 41s
Lint	26m 16s
Run unit tests	18m 29s
Build the Wireshark dissector (ubuntu-latest)	1m 53s
Build CPP Client on Windows x64	33m 8s
Build CPP Client on Windows x86	32m 10s
Build with the C++20 standard	6m 16s
Build CPP Client on macOS with static dependencies	6m 3s
Build Deb x86_64	11m 16s
Build Alpine x86_64	2m 53s
Build RPM x86_64	10m 46s
Check Completion	4s
	2h 30m 55s

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