Backport of bug fix: paused deployments failing progress deadline into release/2.0.x

[hc-github-team-nomad-core]

Backport

This PR is auto-generated from #27804 to be assessed for backporting due to the inclusion of the label backport/2.0.x.

The below text is copied from the body of the original PR.

---

Bug:
Support informed us of customers running into counterintuitive behavior where deployments were failing their progress deadline while paused.

Fix:

• Updated the deploymentwatcher.shouldFail function not to fail deployments if their status is "paused"

The changes below are intended make sure deployments don't fail as soon as they're un-paused

• Updated the deploymentwatcher.getDeploymentStatusUpdate function to set an UpdatedAt time if the new deployment status is "paused" or "running" (might make sense to only reset on running instead of both)
• Update the state store's updateDeploymentStatusImpl function to overwrite the deployment's ProgressDeadline with the UpdatedAt time + ProgressDeadline duration if neither u.UpdatedAt nor u.ProgressDeadline are 0.

Testing & Reproduction steps

• Added an additional test case to deployments_watcher_test.go to assert:
  - that a paused deployment past its progress deadline will not fail
  - that the deployment's progress deadline == UpdatedAt + ProgressDeadline

Links

ref: https://hashicorp.atlassian.net/browse/NMD-1080?atlOrigin=eyJpIjoiMDI5YTFlZjZiMGM2NGQ4MWIwMDU1NjBhZDFjNzFiNjciLCJwIjoiaiJ9

Contributor Checklist

• Changelog Entry If this PR changes user-facing behavior, please generate and add a
  changelog entry using the make cl command.
• Testing Please add tests to cover any new functionality or to demonstrate bug fixes and
  ensure regressions will be caught.
• Documentation If the change impacts user-facing functionality such as the CLI, API, UI,
  and job configuration, please update the Nomad product documentation, which is stored in the
  web-unified-docs repo. Refer to the web-unified-docs contributor guide for docs guidelines.
  Please also consider whether the change requires notes within the upgrade
  guide. If you would like help with the docs, tag the nomad-docs team in this PR.

Reviewer Checklist

• Backport Labels Please add the correct backport labels as described by the internal
  backporting document.
• Commit Type Ensure the correct merge method is selected which should be "squash and merge"
  in the majority of situations. The main exceptions are long-lived feature branches or merges where
  history should be preserved.
• Enterprise PRs If this is an enterprise only PR, please add any required changelog entry
  within the public repository.

• If a change needs to be reverted, we will roll out an update to the code within 7 days.

Changes to Security Controls

Are there any changes to security controls (access controls, encryption, logging) in this pull request? If so, explain.

---

Overview of commits

• 520a7cc