fix: correct unicode character width calculation

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 78.20513% with 17 lines in your changes are missing coverage. Please review.

Project coverage is 94.21%. Comparing base (8ce71a5) to head (f139b84).

Files	Patch %	Lines
rsql_cli/src/main.rs	0.00%	17 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #71 +/- ## ========================================== - Coverage 95.92% 94.21% -1.71% ========================================== Files 54 54 Lines 5273 5305 +32 ========================================== - Hits 5058 4998 -60 - Misses 215 307 +92 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[github-actions[bot]]

Bencher

Report	Sun, March 24, 2024 at 02:19:45 UTC
Project	theseus-rs/rsql
Branch	unicode-character-formatting
Testbed	localhost

Benchmark	Latency	Latency Results nanoseconds (ns)
postgresql	➖ (view plot)	794770000.000
sqlite	➖ (view plot)	254180.000

Bencher - Continuous Benchmarking
View Public Perf Page
Docs | Repo | Chat | Help