Fix hasMessageAvailable will return true after seeking to a timestamp newer than the last message #1135

Job	Run time
Formatting Check	1m 49s
Build the Wireshark dissector (ubuntu-latest)	46s
Lint	22m 35s
Run unit tests	15m 54s
Build CPP Client on Windows x64	19m 14s
Build CPP Client on Windows x86	15m 46s
Build with the C++20 standard	6m 20s
Build Alpine x86_64	31m 7s
Build RPM x86_64	20m 24s
Build CPP Client on macOS with static dependencies	1m 34s
Build Deb x86_64	19m 11s
Check Completion	2s
	2h 34m 42s

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