[blobserve] Catch panic in HTTP requests

[corneliusludmann]

We get some panic errors in blobserve from time to time. However, the log messages from net/http are not very helpful (see #5232).

This change catches the panic errors and adds proper logs like this:

(here tested with this temp. change: 9c7e551)

Hopefully, this change will help to find the proper segment fault.

[codecov]

Codecov Report

Merging #5241 (9c7e551) into main (e0f5b36) will increase coverage by 28.17%.
The diff coverage is 0.00%.

❗ Current head 9c7e551 differs from pull request most recent head 09f8687. Consider uploading reports for the commit 09f8687 to get more accurate results

@@            Coverage Diff            @@
##           main    #5241       +/-   ##
=========================================
+ Coverage      0   28.17%   +28.17%     
=========================================
  Files         0        3        +3     
  Lines         0      536      +536     
=========================================
+ Hits          0      151      +151     
- Misses        0      368      +368     
- Partials      0       17       +17     

Flag	Coverage Δ
components-blobserve-app	28.17% <0.00%> (?)

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Impacted Files	Coverage Δ
components/blobserve/pkg/blobserve/blobserve.go	7.97% <0.00%> (ø)
components/blobserve/pkg/blobserve/refstore.go	63.02% <0.00%> (ø)
components/blobserve/pkg/blobserve/blobspace.go	9.39% <0.00%> (ø)

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[corneliusludmann]

@JanKoehnlein Here is the solution we discussed. WDYT?

[JanKoehnlein]

/lgtm

[roboquat]

LGTM label has been added.

Git tree hash: d3ee459491c9b2f5614a143bb49b35f17d4f6934

[aledbf]

/approve

[roboquat]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aledbf, JanKoehnlein

Associated issue: #5232

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