fix(blob/service): fix getByCommitment

[vgonkivs]

Overview

Fixes #2808

Root cause: I did not check the entire row once the first blob was identified(and moved to the next row). So, in the end, we had a lot of unchecked blobs. Reworked logic now goes through the whole rawShares, until it is possible, constructing blobs and verifying them.

Checklist

• New and updated code has appropriate documentation
• New and updated code has new and/or updated testing
• Required CI checks are passing
• Visual proof for any user facing features like CLI or documentation updates
• Linked issues closed with keywords

[codecov-commenter]

Codecov Report

Merging #2828 (192d0eb) into main (00b32a8) will decrease coverage by 0.19%.
Report is 7 commits behind head on main.
The diff coverage is 74.02%.

@@            Coverage Diff             @@
##             main    #2828      +/-   ##
==========================================
- Coverage   51.50%   51.32%   -0.19%     
==========================================
  Files         168      168              
  Lines       10764    10750      -14     
==========================================
- Hits         5544     5517      -27     
- Misses       4743     4752       +9     
- Partials      477      481       +4     

Files	Coverage Δ
blob/helper.go	52.72% <66.66%> (-1.25%)	⬇️
blob/blob.go	65.93% <75.00%> (+3.24%)	⬆️
blob/service.go	71.25% <74.46%> (+3.01%)	⬆️

... and 14 files with indirect coverage changes

[renaynay]

I'm a bit confused around some naming in this PR

[Wondertan]

The logic looked correct to me and I don't have any simplification in mind.
We should add a regression test for the fixed case.

[Wondertan]

Much much simpler and more readable then the initial solution. Well done