Regenerate test expectations for libclang 23.0.0.

[flowerhack]

When using bindgen with the newest clang version, bindgen-tests currently fail.

I believe these are linked to a couple changes in Clang, e.g.

• Associate documentation comments with macro definitions llvm/llvm-project#198452, which changes how doc comments are extracted
• [clang] Improve nested name specifier AST representation llvm/llvm-project#147835, which changes how dependent types names are parsed, and thus e.g. what was a BindgenOpaqueArray is now omitted (because bindgen can more easily parse the new format)

This commit regenerates test expectations so they pass with the newer clang.

(We observed this in Chromium because Chromium rolls Clang roughtly every 1-2 weeks; this corresponds with 23.0.0.)

(These are new additions to a newlibclang-22 directory rather than updates to the current versions of these files, since these changes were introduced post-libclang-v22.)

[flowerhack]

r? @emilio

I'm new here, but believe I followed all guidelines in CONTRIBUTING.md; lmk if I missed anything.

I didn't see any kind of LLM policy, but, in case there's one and I missed it: I used Gemini to diagnose the probable root cause for the test failure.

I reviewed the LLM's reasoning to confirm its veracity.

Then, I ran the commands for regenerating expectations files myself & updated the associated .toml/.rs files accordingly & ran the appropriate tests.