chore: add ubuntu arm runner to schedule workflow and trigger by main.

[liangyuanpeng]

github action for arm is public preview now, let's beginning use it :)

https://github.blog/changelog/2025-01-16-linux-arm64-hosted-runners-now-available-for-free-in-public-repositories-public-preview/

Run it from schedule workflow and main push first,once it's stable, change it to PR CI.

1. Does this PR affect any open issues?(Y/N) and add issue references (e.g. "fix #123", "re #123".):

• N
• Y

2. What is the scope of this PR (e.g. component or file name):

3. Provide a description of the PR(e.g. more details, effects, motivations or doc link):

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Other

4. Are there any breaking changes?(Y/N) and describe the breaking changes(e.g. more details, motivations or doc link):

• N
• Y

5. Are there test cases for these changes?(Y/N) select and add more details, references or doc links:

• Unit test
• Integration test
• Benchmark (add benchmark stats below)
• Manual test (add detailed scripts or steps below)
• Other

[liangyuanpeng]

let's run once CI and then i will delete below content:

  pull_request:
    branches:
     - main

[liangyuanpeng]

Running arm linux CI with container on x86 at least need 71m https://github.com/kcl-lang/kcl/actions/runs/12973561586/job/36182365231?pr=1842 and running with linxu arm github runner just 20m! see https://github.com/kcl-lang/kcl/actions/runs/12973561606/job/36182365292?pr=1842