fix: preserve more information through liftCommandElabM

[Rob23oba]

This PR changes liftCommandElabM to preserve quotContext, currNamespace and openDecls when running the CommandElabM action.

Fixes #10674

[leanprover-community-bot]

Mathlib CI status (docs):

• ❗ Batteries/Mathlib CI will not be attempted unless your PR branches off the nightly-with-mathlib branch. Try git rebase ffb6142ee7fc7b8f76fd71c5672b4aeb3f8455be --onto 0b2193c7715a55246d0596a4db548c1b5b81562a. You can force Mathlib CI using the force-mathlib-ci label. (2025-10-05 19:51:19)

[leanprover-bot]

Reference manual CI status:

• ❗ Reference manual CI will not be attempted unless your PR branches off the nightly-with-manual branch. Try git rebase ffb6142ee7fc7b8f76fd71c5672b4aeb3f8455be --onto d3dda9f6d4428a906c096067ecb75e432afc4615. You can force reference manual CI using the force-manual-ci label. (2025-10-05 19:51:21)

[Kha]

As mentioned in the issue, this function will, very likely, be deprecated and removed.