[3.11] build: enable aarch64 optimizations

[113xiaoji]

Summary

Linux AArch64 builds now run natively, but the Python 3.11 branch still
inherits the historical emulated-CI override that disables its existing
LTO and PGO path.

Changes

• Remove only the Linux AArch64 _OPTIMIZED=no override
• Keep the cross-built PPC64LE override unchanged
• Bump the unchanged-version recipe build number

Test Plan

• Verified the candidate retains --with-lto, --enable-optimizations,
  profile-opt, and PROFILE_TASK="-m test --pgo"
• Verified the branch diff contains only recipe/build_base.sh and
  recipe/meta.yaml
• Use the native Linux AArch64 GitHub Actions job for build validation

Known Concern

Native AArch64 Python rebuilds have an open downstream cross-build
compatibility issue in #880. This draft does not alter that sysconfig/linker
behavior.

Part of #903

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe/meta.yaml) and found it was in an excellent condition.

I do have some suggestions for making it better though...

For recipe/meta.yaml:

• ℹ️ The recipe is not parsable by parser conda-souschef (grayskull). This parser is not currently used by conda-forge, but may be in the future. We are collecting information to see which recipes are compatible with grayskull.
• ℹ️ The recipe is not parsable by parser conda-recipe-manager. The recipe can only be automatically migrated to the new v1 format if it is parseable by conda-recipe-manager.

_{This message was generated by GitHub Actions workflow run https://github.com/conda-forge/conda-forge-webservices/actions/runs/32581098425. Examine the logs at this URL for more detail.}

[113xiaoji]

@msarahan@xhochy@scopatz@pelson@ocefpaf@jakirkham@chrisburr@isuruf@mbargull@katietz

Could you please review this PR when possible? It is now rebased onto the latest 3.11 branch and the merge conflict has been resolved. The diff remains limited to removing the three-line Linux AArch64 optimization guard and bumping the build number. Thank you!

[conda-forge-admin]

Hi! This is the friendly conda-forge automerge bot!

I considered the following status checks when analyzing this PR:

• linter: passed
• azure: passed
• github-actions: passed

Thus the PR was passing and merged! Have a great day!