Fix hasMessageAvailable will return true after seeking to a timestamp newer than the last message #1133

Job	Run time
Formatting Check	1m 46s
Lint	23m 1s
Build the Wireshark dissector (ubuntu-latest)	45s
Run unit tests	16m 3s
Build CPP Client on Windows x64	18m 50s
Build CPP Client on Windows x86	16m 6s
Build with the C++20 standard	5m 50s
Build CPP Client on macOS with static dependencies	1m 31s
Build Deb x86_64	21m 0s
Build RPM x86_64	17m 47s
Build Alpine x86_64	31m 6s
Check Completion	3s
	2h 33m 48s

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