fix: add search and groupHeadIds support to RM group export functionality

[ilramdhan]

Description

This pull request updates the RM Groups export functionality to support exporting based on both search queries and explicit group selection. The backend API and client-side logic have been enhanced to allow more flexible export operations, including filtered, searched, and selected group modes.

Type of Change

• 🐛 Bug fix
• ✨ New feature
• 🎨 UI/UX improvement
• ♻️ Refactor
• 📚 Documentation
• 🔧 Chore (deps, config)

Module/Component Affected

• Dashboard
• Finance
• HR / IT / CI / EXSIM
• Components (common/)
• Components (ui/)
• Navigation
• API Routes

Changes Made

Export Functionality Improvements:

• The handleExport function in rm-groups-page-client.tsx now sends both activeFilter and search parameters when exporting, enabling exports that respect both filters and search terms.
• The backend export API (route.ts) now accepts and processes a comma-separated list of group_head_ids for "Selected" mode, as well as the search parameter, allowing programmatic export of specific groups or filtered lists.

Type Definition Updates:

• The ExportRMGroupsParams interface in rm-group.ts has been extended to include search and groupHeadIds parameters, reflecting the new export capabilities and clarifying the precedence and usage of these fields.

Build Verification

• npm run lint passes
• npx tsc --noEmit passes
• npm run build succeeds

Accessibility

• Keyboard navigation works
• Screen reader compatible
• Proper ARIA labels
• Color contrast adequate

Performance

• No unnecessary re-renders
• Images optimized
• Heavy components lazy loaded

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Pre-merge Checklist

• I have read and followed RULES.md
• I have read and followed CONTRIBUTING.md
• Loading states implemented (if data fetching)
• Error handling present
• Component props typed properly
• Uses semantic color classes
• Responsive design tested
• Dark mode compatible
• Screenshots included (for UI changes)

[Copilot]

Pull request overview

This PR extends the Finance RM Groups export flow to support exporting by free-text search and by an explicit selection of group head IDs, enabling more flexible “filtered” and “selected” export modes through the BFF route and underlying RPC types.

Changes:

• Extend ExportRMGroupsRequest / ExportRMGroupsParams to include search and groupHeadIds.
• Update the BFF export route to parse search and a comma-separated group_head_ids list and forward them to exportRMGroups.
• Update the RM Groups page export action to include the current search term in export requests.

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated no comments.

File	Description
src/types/generated/finance/v1/rm_group.ts	Updates generated proto TS types/serialization for ExportRMGroupsRequest to include groupHeadIds + search.
src/types/finance/rm-group.ts	Extends UI-level export params type to expose search and groupHeadIds.
src/app/api/v1/finance/rm-groups/export/route.ts	Adds parsing/forwarding of search and group_head_ids for export.
src/app/(dashboard)/finance/rm-pricing/groups/rm-groups-page-client.tsx	Sends current list-page search filter with export requests.

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