Update azure auth docs to account for xms fields limitations and non-required fields on login command#1258

robmonte wants to merge 3 commits intomainhashicorp/web-unified-docs:mainfrom

VAULT-40698/update-azure-auth-claims-xms-fields-api-required-fieldshashicorp/web-unified-docs:VAULT-40698/update-azure-auth-claims-xms-fields-api-required-fieldsCopy head branch name to clipboard