[AL-2303] Rechunk fix for JSON

[FayazRahman]

🚀 🚀 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

• Fix serialization of sample in rechunk for text, json and list htypes

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (main@f6d7f66). Click here to learn what that means.
Patch coverage: 100.00% of modified lines in pull request are covered.

❗ Current head 43c3b94 differs from pull request most recent head 1e88071. Consider uploading reports for the commit 1e88071 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2421   +/-   ##
=======================================
  Coverage        ?   84.68%           
=======================================
  Files           ?      326           
  Lines           ?    37567           
  Branches        ?        0           
=======================================
  Hits            ?    31814           
  Misses          ?     5753           
  Partials        ?        0           

Flag	Coverage Δ
unittests	84.68% <100.00%> (?)

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

Impacted Files	Coverage Δ
deeplake/api/tests/test_rechunk.py	100.00% <100.00%> (ø)
deeplake/core/chunk_engine.py	93.77% <100.00%> (ø)

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