Set parameter nodes instead of node_id on task.list

[margaretpearce]

Closes #3112, closes #3114

Use parameter nodes instead of node_id on task.list.

[pquentin]

Thank you! This is a great catch. Unfortunately none of the Elasticsearch YAML tests that we use for validation set nodes, which is why we missed it. However it was part of validation errors:

elasticsearch-specification/output/schema/validation-errors.json

Lines 1181 to 1186 in 36dbbd9

	"tasks.list": {
	"request": [
	"Request: query parameter 'node_id' does not exist in the json spec",
	"Request: query parameter 'master_timeout' does not exist in the json spec",
	"Request: missing json spec query parameter 'nodes'"
	],

In addition to your fix, I also switched the type from string[] to NodeIds (which is string | string[]):

1. typed clients could have a specific type for this
2. this allows for a comma-separated string too, which is the format Elasticsearch accepts (lists in query parameters are comma-separated by clients before sending)

[pquentin]

Thank you for your contribution, your change is now available in elasticsearch-py 8.16.0 (and all the other clients that use the specification). Note that elasticsearch-py 8.16.0 added warnings for tech preview/beta APIs and the Task management API is part of those. The release notes explain how to disable the warning.