[workspace] Upgrade openusd_internal to latest v25.05

[Aiden2244]

Towards #22928

Sample Console Log:

[5:30:08 PM]  ERROR: /media/ephemeral0/ubuntu/workspace/linux-jammy-clang-bazel-experimental-everything-release/_bazel_ubuntu/5e0ced017c744e846b192696bb0e77f4/external/+internal_repositories+openusd_internal/BUILD.bazel:28:21: Action external/+internal_repositories+openusd_internal/pxr/pxr.h failed: (Exit 1): cmake_configure_file failed: error executing Action command (from target @@+internal_repositories+openusd_internal//:config_genrule) bazel-out/k8-opt-exec-ST-d57f47055a04/bin/tools/workspace/cmake_configure_file --input external/+internal_repositories+openusd_internal/pxr/pxr.h.in --output ... (remaining 10 arguments skipped)
[5:30:08 PM]  
[5:30:08 PM]  Use --sandbox_debug to see verbose messages from the sandbox and retain the sandbox build root for debugging
[5:30:08 PM]  Traceback (most recent call last):
[5:30:08 PM]    File "/media/ephemeral0/ubuntu/workspace/linux-jammy-clang-bazel-experimental-everything-release/_bazel_ubuntu/5e0ced017c744e846b192696bb0e77f4/sandbox/linux-sandbox/4783/execroot/_main/bazel-out/k8-opt-exec-ST-d57f47055a04/bin/tools/workspace/cmake_configure_file.runfiles/_main/tools/workspace/cmake_configure_file.py", line 247, in <module>
[5:30:08 PM]      main()
[5:30:08 PM]    File "/media/ephemeral0/ubuntu/workspace/linux-jammy-clang-bazel-experimental-everything-release/_bazel_ubuntu/5e0ced017c744e846b192696bb0e77f4/sandbox/linux-sandbox/4783/execroot/_main/bazel-out/k8-opt-exec-ST-d57f47055a04/bin/tools/workspace/cmake_configure_file.runfiles/_main/tools/workspace/cmake_configure_file.py", line 239, in main
[5:30:08 PM]      raise RuntimeError(f"The definitions of {sorted(unused_vars)} were"
[5:30:08 PM]  RuntimeError: The definitions of ['PXR_USE_INTERNAL_BOOST_PYTHON'] were ignored and therefore seem like dead code; remove them from defines= or undefines=.

Sample Jenkins Job: https://drake-jenkins.csail.mit.edu/job/linux-jammy-clang-bazel-experimental-everything-release/8279/consoleFull

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This change is 

[jwnimmer-tri]

+@rpoyner-tri I'll volunteer you to own this, please (pushing build fixes to the branch). Extremely low priority. Let's say the goal is to finish it before the next upgrade cycle on June 1st.

[rpoyner-tri]

Reviewed 2 of 3 files at r2.
Reviewable status: LGTM missing from assignee rpoyner-tri(platform), needs at least two assigned reviewers, missing label for release notes (waiting on @Aiden2244)

[jwnimmer-tri]

BTW probably worth going up the minor patch to https://github.com/PixarAnimationStudios/OpenUSD/releases/tag/v25.05.01

[jwnimmer-tri]

(Or in the alternative, now might be the time to declare the USD parser as abandoned, and revert it all until someone gets interested in it again.)

[rpoyner-tri]

I recommend closing this, in favor of #23065 .

Reviewable status: LGTM missing from assignee rpoyner-tri(platform), needs at least two assigned reviewers, missing label for release notes (waiting on @Aiden2244)