[Networking] Fixing enforced dial conflict between unicast manager and swarm

[yhassanzadeh13]

The latest update simplifies the unicast manager's operations as follows:

1. The unicast manager will create streams without checking for an existing connection, trusting the libp2p swarm to either dial a new connection or use the best available one.
2. It removes the single connection limit between pairs, allowing the libp2p resource manager to regulate connections, which is crucial for network stability based on our mainnet debug findings.
3. The manager no longer initiates connections but focuses on stream creation, with the swarm handling any necessary connections.
4. Concurrent stream creation is not delayed by the unicast manager; libp2p's internal mechanisms already address this efficiently.

Reference: https://github.com/dapperlabs/flow-go/issues/6895

The following diagrams summarize the updates in the resource manger.

Unicast Manager Architecture master

Unicast Manager Architecture this PR

[codecov-commenter]

Codecov Report

Attention: 12 lines in your changes are missing coverage. Please review.

Comparison is base (ab5b93f) 56.30% compared to head (3263ab6) 56.21%.

Files	Patch %	Lines
network/p2p/unicast/cache/unicastConfigCache.go	81.25%	6 Missing ⚠️
network/p2p/unicast/manager.go	88.46%	2 Missing and 1 partial ⚠️
network/p2p/p2pbuilder/libp2pNodeBuilder.go	0.00%	2 Missing ⚠️
network/netconf/flags.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4951      +/-   ##
==========================================
- Coverage   56.30%   56.21%   -0.10%     
==========================================
  Files         963      971       +8     
  Lines       90184    90434     +250     
==========================================
+ Hits        50776    50833      +57     
- Misses      35610    35803     +193     
  Partials     3798     3798              

Flag	Coverage Δ
unittests	56.21% <80.95%> (-0.10%)	⬇️

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