fix: refresh functional icons after theme updates with demo

[fangsmile]

Summary

• Merge the fix from PR fix: refresh functional icons after theme updates #5238 for issue [Bug] 修改主题中的functionalIconsStyle 配置后，updateOption后，图标的颜色没有生效 #4816
• Add a dedicated page demo to reproduce and verify functional icon theme updates
• Correct the @visactor/vtable changeset type from none to patch

Issue

Fixes #4816

Demo

• packages/vtable/examples/debug/issue-4816-functional-icons-theme.ts
• Menu entry: Debug / issue-4816-functional-icons-theme
• Flow: create table with initial functionalIconsStyle, call updateOption with new colors, check helper icon SVG caches

Verification

• Before merging PR fix: refresh functional icons after theme updates #5238: FAIL | updated sort=false, collapse=false, drag=false
• After merging PR fix: refresh functional icons after theme updates #5238: PASS | updated sort=true, collapse=true, drag=true
• node ../../common/scripts/install-run-rushx.js compile passed in packages/vtable
• git diff --check passed

Review

• Reviewed BaseTable theme update paths, helper icon cache refresh methods, and regression tests
• Found and fixed one release metadata issue: production @visactor/vtable code changed but changeset type was none; updated it to patch
• No remaining blocking logic/regression issues found

Note

• Focused Jest commands were attempted, but direct package Jest processes stayed running without output in this local worktree environment. Page reproduction and TypeScript compile passed.