Update MyPrettyTable alignment to left-align all fields by default #2286

Job	Run time
tests (ubuntu-latest, unit, 3.8)	55s
tests (ubuntu-latest, unit, 3.12)	45s
tests (ubuntu-latest, integration, 3.8)	3m 6s
tests (ubuntu-latest, integration, 3.12)	3m 17s
tests (ubuntu-latest, tool, 3.8)	53s
tests (ubuntu-latest, tool, 3.12)	47s
tests (windows-2022, unit, 3.8)	1m 18s
tests (windows-2022, unit, 3.12)	2m 5s
tests (windows-2022, integration, 3.8)	2m 38s
tests (windows-2022, integration, 3.12)	3m 27s
tests (windows-2022, tool, 3.8)	3m 56s
tests (windows-2022, tool, 3.12)	3m 53s
coverage	17s
	27m 17s

Provide feedback