fix: adding delay between dials

[gabrielmer]

Problem

In unit testing, after a node fails to connect to another node in a different cluster, the node fails to connect to a node in its same cluster and shard immediately after the failure.

Temporarily adding a small delay between dials until the root cause is found.

Issue

waku-org/nwaku#2621

[github-actions]

size-limit report 📦

Path	Size	Loading time (3g)	Running time (snapdragon)	Total time
Waku node	180.77 KB (0%)	3.7 s (0%)	741 ms (+26.29% 🔺)	4.4 s
Waku Simple Light Node	180.85 KB (0%)	3.7 s (0%)	486 ms (-9.14% 🔽)	4.2 s
ECIES encryption	23.12 KB (0%)	463 ms (0%)	184 ms (+58.91% 🔺)	646 ms
Symmetric encryption	22.57 KB (0%)	452 ms (0%)	139 ms (-33.86% 🔽)	590 ms
DNS discovery	72.44 KB (0%)	1.5 s (0%)	464 ms (+21.09% 🔺)	2 s
Peer Exchange discovery	73.96 KB (0%)	1.5 s (0%)	446 ms (+15.02% 🔺)	2 s
Local Peer Cache Discovery	67.68 KB (0%)	1.4 s (0%)	259 ms (-30.91% 🔽)	1.7 s
Privacy preserving protocols	38.78 KB (0%)	776 ms (0%)	225 ms (-21.81% 🔽)	1000 ms
Waku Filter	111.38 KB (0%)	2.3 s (0%)	451 ms (+48.93% 🔺)	2.7 s
Waku LightPush	110.15 KB (0%)	2.3 s (0%)	504 ms (+15.78% 🔺)	2.8 s
History retrieval protocols	110.66 KB (0%)	2.3 s (0%)	466 ms (+18.73% 🔺)	2.7 s
Deterministic Message Hashing	4.83 KB (0%)	97 ms (0%)	13 ms (+6% 🔺)	109 ms

[danisharora099]

#1977