fix: add meaningful error on docarray issue

[jacobowitz]

Issue #4194 was meant to be fixed by #4203

Unfortunately it did not, because the post install trigger is not happening when installing Jina as a wheel.
I dont see a proper way of working around it, so I changed at least the error message to something more meaningful

[codecov]

Codecov Report

Merging #4213 (e446cb7) into master (5b6d2bd) will increase coverage by 0.48%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##           master    #4213      +/-   ##
==========================================
+ Coverage   86.38%   86.86%   +0.48%     
==========================================
  Files         114      114              
  Lines        8304     8307       +3     
==========================================
+ Hits         7173     7216      +43     
+ Misses       1131     1091      -40     

Flag	Coverage Δ
daemon	42.49% <50.00%> (+<0.01%)	⬆️
jina	86.61% <50.00%> (+7.56%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
jina/__init__.py	69.31% <50.00%> (-1.28%)	⬇️
jina/serve/networking.py	71.27% <0.00%> (-12.47%)	⬇️
jina/orchestrate/peas/jinad.py	93.43% <0.00%> (-0.73%)	⬇️
jina/jaml/__init__.py	95.47% <0.00%> (+0.41%)	⬆️
jina/orchestrate/pods/config/docker_compose.py	100.00% <0.00%> (+0.53%)	⬆️
jina/helper.py	81.50% <0.00%> (+0.85%)	⬆️
jina/serve/runtimes/gateway/http/app.py	92.13% <0.00%> (+1.12%)	⬆️
jina/jaml/parsers/flow/v1.py	98.24% <0.00%> (+1.75%)	⬆️
jina/clients/base/http.py	96.07% <0.00%> (+1.96%)	⬆️
...strate/pods/config/k8slib/kubernetes_deployment.py	53.19% <0.00%> (+2.12%)	⬆️
... and 8 more

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[github-actions]

Latency summary

Current PR yields:

• 🐢🐢 index QPS at 815, delta to last 2 avg.: -42%
• 🐎🐎🐎🐎 query QPS at 43, delta to last 2 avg.: +62%
• 😶 avg flow time within 1.3676 seconds, delta to last 2 avg.: +5%
• 😶 import jina within 0.4134 seconds, delta to last 2 avg.: +2%

Breakdown

Version	Index QPS	Query QPS	Avg Flow Time (s)	Import Time (s)
current	815	43	1.3676	0.4134
2.6.4	1478	26	1.4628	0.3845
2.6.3	1340	25	1.1383	0.42

Backed by latency-tracking. Further commits will update this comment.