Update sentinel job for native providers

[blampe]

p-k has a weird bug pulumi/pulumi-kubernetes#3382 where we aren't able to depend on the correct "Sentinel" check.

This updates the native sentinel job to more closely match the bridged one:

ci-mgmt/provider-ci/test-providers/aws/.github/workflows/run-acceptance-tests.yml

Lines 87 to 109 in 1243b9e

	sentinel:
	name: sentinel
	if: github.event_name == 'repository_dispatch' ||
	github.event.pull_request.head.repo.full_name == github.repository
	permissions:
	statuses: write
	needs:
	- test
	- build_provider
	- license_check
	runs-on: ubuntu-latest
	steps:
	- uses: guibranco/github-status-action-v2@0849440ec82c5fa69b2377725b9b7852a3977e76 # v1.1.13
	with:
	authToken: ${{secrets.GITHUB_TOKEN}}
	# Write an explicit status check called "Sentinel" which will only pass if this code really runs.
	# This should always be a required check for PRs.
	context: 'Sentinel'
	description: 'All required checks passed'
	state: 'success'
	# Write to the PR commit SHA if it's available as we don't want the merge commit sha,
	# otherwise use the current SHA for any other type of build.
	sha: ${{ github.event.pull_request.head.sha || github.sha }}

Other native providers don't have this problem, so I don't actually think this will resolve the issue, but it should at least help rule out any permission weirdness.

Edit: OK I ran this against p-k here pulumi/pulumi-kubernetes#3383 and suddenly the Sentinel check is available to us! So it does seem there's something wonky about the job's settings.

Before

After