Intent of yargs.mjs|title=yargs dsl tests should allow a valid choice|occurrence=1

All 2 exact tests in this concept. Every test is marked by where it enters the hierarchy.

mocha:v1|namespace=yargs@4153e0f097aeaf43a71a2530db6dda51dff2c544:main|file=test/ 2 tests
- mocha:v1|namespace=yargs@4153e0f097aeaf43a71a2530db6dda51dff2c544:main|file=test/yargs.mjs|title=yargs dsl tests should allow a valid choice|occurrence=1 Introduced here
- mocha:v1|namespace=yargs@4153e0f097aeaf43a71a2530db6dda51dff2c544:main|file=test/yargs.mjs|title=yargs dsl tests should ignore a missing array choice with an empty default|occurrence=1 Inherited yargs.mjs|title=yargs dsl tests should ignore a missing array choice with an empty default|occurrence=1