ci: build generated types before type check

[Justin-ZS]

Summary

• build generated library types in the lint job before running npm run checktype
• prevents cached node_modules from skipping npm ci and leaving types/dist/echarts missing

Root Cause

The lint job skips npm ci when the node_modules cache hits. Since npm ci is what normally runs prepare -> build:lib, generated type files may be absent before checktype.

Validation

• npm ci
• npm run build:lib && npm run checktype
• commit hook: npm run lint and npm run checktype

[echarts-bot]

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