feat: Support less var convert

[zombieJ]

https://github.com/ant-design/ant-design/discussions/38365

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Name	Status	Preview	Updated
compatible	✅ Ready (Inspect)	Visit Preview	Nov 7, 2022 at 7:54AM (UTC)

[codecov-commenter]

Codecov Report

Base: 42.25% // Head: 58.00% // Increases project coverage by +15.74% :tada:

Coverage data is based on head (eeb6e80) compared to base (3e91a76). Patch coverage: 96.66% of modified lines in pull request are covered.

:exclamation: Current head eeb6e80 differs from pull request most recent head cbc68cb. Consider uploading reports for the commit cbc68cb to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #148 +/- ## =========================================== + Coverage 42.25% 58.00% +15.74% =========================================== Files 5 7 +2 Lines 71 100 +29 Branches 20 24 +4 =========================================== + Hits 30 58 +28 - Misses 41 42 +1 ``` | [Impacted Files](https://codecov.io/gh/ant-design/compatible/pull/148?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ant-design) | Coverage Δ | | |---|---|---| | [src/theme/genColorMapToken.ts](https://codecov.io/gh/ant-design/compatible/pull/148/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ant-design#diff-c3JjL3RoZW1lL2dlbkNvbG9yTWFwVG9rZW4udHM=) | `0.00% <ø> (ø)` | | | [src/theme/index.ts](https://codecov.io/gh/ant-design/compatible/pull/148/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ant-design#diff-c3JjL3RoZW1lL2luZGV4LnRz) | `100.00% <ø> (ø)` | | | [src/theme/convertLegacyToken.ts](https://codecov.io/gh/ant-design/compatible/pull/148/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ant-design#diff-c3JjL3RoZW1lL2NvbnZlcnRMZWdhY3lUb2tlbi50cw==) | `94.44% <94.44%> (ø)` | | | [src/comment/index.tsx](https://codecov.io/gh/ant-design/compatible/pull/148/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ant-design#diff-c3JjL2NvbW1lbnQvaW5kZXgudHN4) | `66.66% <100.00%> (+1.44%)` | :arrow_up: | | [src/comment/style/index.tsx](https://codecov.io/gh/ant-design/compatible/pull/148/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ant-design#diff-c3JjL2NvbW1lbnQvc3R5bGUvaW5kZXgudHN4) | `100.00% <100.00%> (ø)` | | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ant-design). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ant-design)

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