fix: Don't give up on reading local header when given short reads

[fasterthanlime]

Closes #74

[codecov]

Codecov Report

Attention: Patch coverage is 64.11765% with 61 lines in your changes are missing coverage. Please review.

Project coverage is 75.69%. Comparing base (d00ef26) to head (1603637).

Files	Patch %	Lines
rc-zip/src/fsm/entry/zstd_dec.rs	62.26%	20 Missing ⚠️
rc-zip/src/fsm/entry/lzma_dec.rs	65.38%	18 Missing ⚠️
rc-zip-tokio/src/entry_reader.rs	69.69%	10 Missing ⚠️
rc-zip-sync/src/entry_reader.rs	60.86%	9 Missing ⚠️
rc-zip/src/fsm/entry/mod.rs	50.00%	3 Missing ⚠️
rc-zip-tokio/src/read_zip.rs	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #75      +/-   ##
==========================================
- Coverage   76.37%   75.69%   -0.68%     
==========================================
  Files          25       25              
  Lines        2455     2473      +18     
==========================================
- Hits         1875     1872       -3     
- Misses        580      601      +21     

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