Initialize arrays as arrays

[justsmth]

Issues:

Addresses aws/aws-lc-rs#623

Description of changes:

• The size for arrays initialized with string literals should include the null-terminator. The arrays should instead be initialized like arrays are chars.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license and the ISC license.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.67%. Comparing base (d681431) to head (434ec91).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2042      +/-   ##
==========================================
- Coverage   78.68%   78.67%   -0.02%     
==========================================
  Files         598      598              
  Lines      103350   103350              
  Branches    14692    14692              
==========================================
- Hits        81321    81308      -13     
- Misses      21377    21388      +11     
- Partials      652      654       +2     

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