Fix the missing lightning_tensor device in PL/Lightning stable/stable

[maliasadi]

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---

Context:
The plugin matrix for PL/Lightning stable/stable is currently failing due to the missing lightning_tensor device in the stable version. Check https://github.com/PennyLaneAI/pennylane-lightning/actions/runs/9558259457. This PR adds a temporary patch to skip the build & test for stable/stable until the next release.

Description of the Change:

Benefits:
Pass stable/stable plugin matrix https://github.com/PennyLaneAI/pennylane-lightning/actions/runs/9569756079

Possible Drawbacks:

Related GitHub Issues:

[sc-66324]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.85%. Comparing base (476cac2) to head (73c9e99).
Report is 92 commits behind head on master.

❗ There is a different number of reports uploaded between BASE (476cac2) and HEAD (73c9e99). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (476cac2)	HEAD (73c9e99)
	12	11

Additional details and impacted files

@@             Coverage Diff             @@
##           master     #766       +/-   ##
===========================================
- Coverage   98.41%   65.85%   -32.57%     
===========================================
  Files         109       30       -79     
  Lines       15696     3933    -11763     
===========================================
- Hits        15448     2590    -12858     
- Misses        248     1343     +1095     

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[AmintorDusko]

Much better now! Thanks!

[vincentmr]

LGTM now ;) Thanks @maliasadi .

[maliasadi]

Thanks folks @vincentmr @AmintorDusko

Still waiting for the CI https://github.com/PennyLaneAI/pennylane-lightning/actions/runs/9571217404