provider: don't attempt to register unavailable RPs

[ChandlerSwift]

PR #23380 addressed issue #21785, but with that fix, when an unavailable resource provider was found, it would still be added to the list of providers to be registered, and then fail upon attempted registration.

Fixes #21785

This skips registration for providers which are neither registered nor unregistered.

[ChandlerSwift]

It's not obvious to me whether waiting-response is waiting on a response to me or from me, but in case it's supposed to be from me:

The failed check is unrelated to this PR, as best as I can tell. The output mentions a datadog file:

internal/services/datadog/datadog_monitor_tag_rule_resource.go    245				LogRules:    expandLogRules(d.Get("log").([]interface{})),

Which it looks like was fixed here:

https://github.com/hashicorp/terraform-provider-azurerm/pull/22806/files#diff-0ba664d8eebd366bc33a40325ff672294df2001a4d860910c389c3f9b74e7834L245

but is for some reason showing up as an issue here. (I may be able to work around it by a rebase -- let me know if you want me to give that a shot!)

[katbyte]

@ChandlerSwift - typically when its calling out a fire not changed you need to just merge to the latest commit on main

[ChandlerSwift]

Got it; rebased -- thanks!

[ChandlerSwift]

Another error, another rebase! :)

[ChandlerSwift]

Hey @katbyte -- happy new year! Anything I can do to help move this along? I did a preemptive rebase to hopefully head off any workflow failures.

[ChandlerSwift]

Rebased again to fix that workflow!

[ChandlerSwift]

Oops! That PR wasn't intended to close this one; I didn't realize a mention (without the "closes " syntax would do that 🤦

@katbyte would you mind reopening this PR? Seems like only repo maintainers have PR reopening powers. Otherwise I'd be happy to open a new PR if that's easier for any reason!

[rcskosir]

@ChandlerSwift Thanks for helping us find this accidental close. GitHub is showing that there has been a force-push or recreation on the main branch and will not allow me to reopen this issue. If you could open a new PR that would be greatly appreciated!

[ChandlerSwift]

@rcskosir Thanks for trying! I've opened #24571; hopefully that'll work.

[github-actions]

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