Optimize certificate application operations. #1602
Description
Is your feature request related to a problem? Please describe.
When attempting to issue certificates, it's always necessary to select the correct DNS provider from a large pool of options, and then choose the DNS credentials.
Describe the solution you'd like
I believe it would be entirely possible to list all DNS credentials directly and remove the DNS provider options altogether. This would significantly improve the efficiency of selection and issuance.
Describe alternatives you've considered
If you do this, you can make the DNS credential option optional; you can also consider displaying the corresponding provider before each credential (although generally you can directly identify it by the credential name).
Additional context
In the current design, selecting a provider before selecting credentials is an overly redundant operation, since a provider is already fixed when setting up credentials.
Additionally, a "Help" icon could be added when selecting credentials, prompting (or also allowing users to click) them to first go to the DNS/credentials page to create and add credentials.