Added Default for Utf8Array

[ritchie46]

Improves ergonomics when using std::mem::take.

[codecov]

Codecov Report

Merging #1169 (3a63129) into main (3fdb33f) will decrease coverage by 0.03%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main    #1169      +/-   ##
==========================================
- Coverage   83.73%   83.70%   -0.04%     
==========================================
  Files         365      365              
  Lines       35847    35873      +26     
==========================================
+ Hits        30018    30028      +10     
- Misses       5829     5845      +16     

Impacted Files	Coverage Δ
src/array/utf8/mod.rs	83.64% <0.00%> (-2.94%)	⬇️
src/io/ipc/read/array/boolean.rs	90.74% <0.00%> (-7.41%)	⬇️
src/io/parquet/read/deserialize/simple.rs	82.83% <0.00%> (-0.97%)	⬇️
src/array/utf8/mutable.rs	89.77% <0.00%> (-0.76%)	⬇️
src/io/parquet/read/deserialize/mod.rs	85.81% <0.00%> (-0.10%)	⬇️
src/io/ipc/read/reader.rs	96.32% <0.00%> (+0.33%)	⬆️
src/io/ipc/read/file_async.rs	61.19% <0.00%> (+0.74%)	⬆️
src/array/binary/mod.rs	90.12% <0.00%> (+1.23%)	⬆️
src/io/ipc/read/stream_async.rs	76.71% <0.00%> (+1.36%)	⬆️

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