fix: handle multiple proxies

[TestingPlant]

This adds some fixes to support multiple proxies properly.

[github-actions]

Benchmark Results for general

ray_intersection/aabb_size_0.1                     [  19.2 ns ...  19.2 ns ]      +0.21%
ray_intersection/aabb_size_1                       [  19.3 ns ...  19.2 ns ]      -0.17%
ray_intersection/aabb_size_10                      [  19.2 ns ...  19.2 ns ]      +0.10%
ray_intersection/ray_distance_1                    [   3.8 ns ...   3.8 ns ]      +0.04%
ray_intersection/ray_distance_5                    [   3.8 ns ...   3.8 ns ]      -0.11%
ray_intersection/ray_distance_20                   [   3.8 ns ...   3.8 ns ]      +0.18%
overlap/no_overlap                                 [  28.6 ns ...  28.6 ns ]      +0.05%
overlap/partial_overlap                            [  28.4 ns ...  28.4 ns ]      -0.04%
overlap/full_containment                           [  21.7 ns ...  21.6 ns ]      -0.17%
point_containment/inside                           [   4.9 ns ...   4.9 ns ]      +0.14%
point_containment/outside                          [   4.4 ns ...   4.4 ns ]      -0.23%
point_containment/boundary                         [   5.0 ns ...   5.0 ns ]      +0.37%

Comparing to 313503c

[codecov]

Codecov Report

❌ Patch coverage is 0% with 67 lines in your changes missing coverage. Please review.
✅ Project coverage is 23.24%. Comparing base (1f28877) to head (edab17d).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/hyperion-proxy/src/cache.rs	0.00%	19 Missing ⚠️
crates/hyperion/src/net/proxy.rs	0.00%	19 Missing ⚠️
crates/hyperion/src/egress/mod.rs	0.00%	11 Missing ⚠️
crates/hyperion/src/net/intermediate.rs	0.00%	11 Missing ⚠️
crates/hyperion/src/egress/channel.rs	0.00%	4 Missing ⚠️
crates/hyperion/src/net/mod.rs	0.00%	2 Missing ⚠️
crates/hyperion-proto/src/server_to_proxy.rs	0.00%	1 Missing ⚠️

@@            Coverage Diff             @@
##             main     #951      +/-   ##
==========================================
+ Coverage   23.22%   23.24%   +0.01%     
==========================================
  Files         157      157              
  Lines       15494    15532      +38     
  Branches      486      489       +3     
==========================================
+ Hits         3599     3610      +11     
- Misses      11794    11821      +27     
  Partials      101      101              

Files with missing lines	Coverage Δ
crates/hyperion/src/simulation/mod.rs	21.86% <ø> (ø)
crates/hyperion-proto/src/server_to_proxy.rs	7.14% <0.00%> (-0.55%)	⬇️
crates/hyperion/src/net/mod.rs	8.71% <0.00%> (-0.05%)	⬇️
crates/hyperion/src/egress/channel.rs	33.33% <0.00%> (-0.25%)	⬇️
crates/hyperion/src/egress/mod.rs	18.18% <0.00%> (-0.34%)	⬇️
crates/hyperion/src/net/intermediate.rs	14.14% <0.00%> (-0.45%)	⬇️
crates/hyperion-proxy/src/cache.rs	0.00% <0.00%> (ø)
crates/hyperion/src/net/proxy.rs	0.00% <0.00%> (ø)

... and 1 file with indirect coverage changes

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