Vualt token renew doesn't retry on failure

If consul-template is configured to use vault token with a renew configuration, and the vault token renew fails once (for example the server is temporarily unreachable), it doesn't retry like intended.

> 2025-05-08T11:37:57.417Z [WARN] vault.token: failed to renew: context deadline exceeded
2025-05-08T11:37:57.417Z [WARN] vault.token: renewer done (maybe the lease expired)

After that it hangs.

Problem comes from the line:
https://github.com/hashicorp/consul-template/blob/1adb94d61529f621c83ab7a8bed01e8764ac2087/watch/view.go#L165

The channel that is being written isn't buffered and there is no one reading from that channel for the special vault token watcher:
https://github.com/hashicorp/consul-template/blob/1adb94d61529f621c83ab7a8bed01e8764ac2087/manager/runner.go#L85

Start by tracing the watcher interaction at view.go:165 and manager/runner.go:85, focusing on the special Vault token watcher and what happens after renewal fails. Done means a temporary Vault renewal failure does not leave the process hanging and the token renewal retries as intended.

Written by the indexing model from the issue text.