feat(xtask): check rustfmt version in codegen

[siketyan]

Summary

Closes #5258

I added checking the rustfmt version before running. Plus, I added a OnceLock to run rustfmt --version only once.

Test Plan

The codegen CI should pass.

[github-actions]

Parser conformance results on

js/262

Test result	main count	This PR count	Difference
Total	50388	50388	0
Passed	49073	49073	0
Failed	1315	1315	0
Panics	0	0	0
Coverage	97.39%	97.39%	0.00%

jsx/babel

Test result	main count	This PR count	Difference
Total	40	40	0
Passed	37	37	0
Failed	3	3	0
Panics	0	0	0
Coverage	92.50%	92.50%	0.00%

symbols/microsoft

Test result	main count	This PR count	Difference
Total	6641	6641	0
Passed	2229	2229	0
Failed	4412	4412	0
Panics	0	0	0
Coverage	33.56%	33.56%	0.00%

ts/babel

Test result	main count	This PR count	Difference
Total	798	798	0
Passed	706	706	0
Failed	92	92	0
Panics	0	0	0
Coverage	88.47%	88.47%	0.00%

ts/microsoft

Test result	main count	This PR count	Difference
Total	18658	18658	0
Passed	14309	14309	0
Failed	4349	4349	0
Panics	0	0	0
Coverage	76.69%	76.69%	0.00%