[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.}