DISPATCH-2307: prevent router failure if id is greater than 64 bytes

[kgiusti]

fixes:

• buffer overflow in iterator library
• incorrect fanout value for locally destined messages

[codecov-commenter]

Codecov Report

Merging #1478 (7d39074) into main (759aa17) will increase coverage by 0.03%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #1478      +/-   ##
==========================================
+ Coverage   84.79%   84.83%   +0.03%     
==========================================
  Files         116      116              
  Lines       28636    28644       +8     
==========================================
+ Hits        24282    24299      +17     
+ Misses       4354     4345       -9     

Impacted Files	Coverage Δ
src/dispatch.c	86.97% <100.00%> (+0.06%)	⬆️
src/iterator.c	89.78% <100.00%> (+0.31%)	⬆️
src/message.c	87.34% <100.00%> (-0.01%)	⬇️
src/router_core/forwarder.c	93.06% <100.00%> (-0.40%)	⬇️
tests/message_test.c	78.65% <100.00%> (ø)
tests/run_unit_tests_size.c	94.73% <100.00%> (+0.29%)	⬆️
src/adaptors/tcp_adaptor.c	77.21% <0.00%> (-0.22%)	⬇️
src/router_node.c	93.55% <0.00%> (ø)
src/router_core/transfer.c	94.92% <0.00%> (+0.42%)	⬆️
... and 3 more

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