lightning qubit uses parameter shift if metric tensor applied

[albi3ro]

Before submitting

Please complete the following checklist when submitting a PR:

• All new features must include a unit test.
  If you've fixed a bug or added code that should be tested, add a test to the
  test directory!

• All new functions and code must be clearly commented and documented.
  If you do make documentation changes, make sure that the docs build and
  render correctly by running make docs.

• Ensure that the test suite passes, by running make test.

• Add a new entry to the doc/releases/changelog-dev.md file, summarizing the
  change, and including a link back to the PR.

• The PennyLane source code conforms to
  PEP8 standards.
  We check all of our code against Pylint.
  To lint modified files, simply pip install pylint, and then
  run pylint pennylane/path/to/file.py.

When all the above are checked, delete everything above the dashed
line and fill in the pull request template.

---

Context:

Description of the Change:

Benefits:

Possible Drawbacks:

Related GitHub Issues:

[albi3ro]

See issue #5642

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

❗ No coverage uploaded for pull request base (v0.36.0-rc0@76edb60). Click here to learn what that means.

Additional details and impacted files

@@              Coverage Diff               @@
##             v0.36.0-rc0    #5624   +/-   ##
==============================================
  Coverage               ?   99.69%           
==============================================
  Files                  ?      412           
  Lines                  ?    38328           
  Branches               ?        0           
==============================================
  Hits                   ?    38210           
  Misses                 ?      118           
  Partials               ?        0           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[trbromley]

Thanks @albi3ro! So I understand, this PR does not resolve the issue reported in #5642 but is just related, right?

[albi3ro]

When writing tests for this PR, I found #5642. Because I didn't have time to fix it, I marked some jax tests as xfail and opened a bug report.

So this PR uncovered but did not fix #5642 .