Add mcTVM quoted MACA path handling

[ghangz]

Summary

• This change makes FindMACA.cmake handle quoted MACA paths more safely, which avoids configure failures when toolchain paths contain shell-sensitive characters.
• The change is limited to MACA build discovery or guarded setup logic and keeps existing default behavior compatible.
• Main files: cmake/utils/FindMACA.cmake

Validation

• Verified on Gitee.AI MetaX GPU resources in the mcTVM TileLang/MACA TVM build batch, 6/6 PASS.
• Branch validation command: CMake configure and mxcc compile smoke validation in the MACA TVM build image.
• Pull request text is ASCII-only to avoid encoding issues on web forms and API clients.

Review notes

• Source branch: ghangz:mengz/mctvm-find-maca-quote-paths
• Target branch: MetaX-MACA/mcTVM:dev
• Maintainers can modify this branch if follow-up adjustments are needed.

[gemini-code-assist]

Code Review

This pull request updates 'cmake/utils/FindMACA.cmake' by wrapping several variable and environment variable references in double quotes within 'IS_DIRECTORY' checks and path assignments. This is a standard CMake best practice to ensure paths containing spaces are handled correctly. There are no review comments, and I have no additional feedback to provide.

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