DISPATCH-1968: Avoid proton calls on closed raw connections

[ChugR]

• Do not write new buffers if connection is CLOSED_WRITE
• Do not call connection_wake if CLOSED_READ or CLOSED_WRITE
  This fixes crashes but there is still work left with leaking messages and buffers when server connections close before client connections.

[codecov-io]

Codecov Report

Merging #1047 (b983e61) into master (f07975e) will increase coverage by 0.00%.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master    #1047   +/-   ##
=======================================
  Coverage   82.48%   82.48%           
=======================================
  Files         111      111           
  Lines       27425    27443   +18     
=======================================
+ Hits        22621    22636   +15     
- Misses       4804     4807    +3     

Impacted Files	Coverage Δ
src/adaptors/tcp_adaptor.c	3.02% <0.00%> (-0.08%)	⬇️
...re/modules/edge_addr_tracking/edge_addr_tracking.c	88.70% <0.00%> (-1.62%)	⬇️
src/router_core/connections.c	88.81% <0.00%> (-0.30%)	⬇️
src/adaptors/http1/http1_server.c	84.50% <0.00%> (-0.30%)	⬇️
src/router_core/transfer.c	92.24% <0.00%> (-0.22%)	⬇️
src/router_node.c	94.03% <0.00%> (-0.11%)	⬇️
src/message.c	87.07% <0.00%> (-0.08%)	⬇️
src/server.c	86.78% <0.00%> (+0.10%)	⬆️
src/router_core/delivery.c	93.51% <0.00%> (+0.76%)	⬆️
src/iterator.c	93.17% <0.00%> (+3.87%)	⬆️

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[grs]

lgtm