[AL-1626] Speedup hub load

[AbhinavTuli]

🚀 🚀 Pull Request

Checklist:

• My code follows the style guidelines of this project and the Contributing document
• I have commented my code, particularly in hard-to-understand areas
• I have kept the coverage-rate up
• I have performed a self-review of my own code and resolved any problems
• I have checked to ensure there aren't any other open Pull Requests for the same change
• I have described and made corresponding changes to the relevant documentation
• New and existing unit tests pass locally with my changes

Changes

• Removes redundant loads of dataset meta from storage

[codecov]

Codecov Report

Merging #1442 (88ca7ad) into main (c1130de) will increase coverage by 0.03%.
The diff coverage is 97.05%.

@@            Coverage Diff             @@
##             main    #1442      +/-   ##
==========================================
+ Coverage   92.10%   92.13%   +0.03%     
==========================================
  Files         178      178              
  Lines       14325    14323       -2     
==========================================
+ Hits        13194    13197       +3     
+ Misses       1131     1126       -5     

Flag	Coverage Δ
unittests	92.13% <97.05%> (+0.03%)	⬆️

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

Impacted Files	Coverage Δ
hub/api/dataset.py	87.71% <83.33%> (ø)
hub/core/dataset/dataset.py	93.77% <100.00%> (-0.03%)	⬇️
hub/util/version_control.py	98.00% <100.00%> (ø)
hub/core/lock.py	85.24% <0.00%> (+1.63%)	⬆️
hub/core/storage/s3.py	73.59% <0.00%> (+1.68%)	⬆️

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