chore(bulk-import): optimize bulk-import

[debsmita1]

Hey, I just made a Pull Request!

Resolves:

https://redhat.atlassian.net/browse/RHIDP-15551

• Cut NFS Module Federation sync size for bulk-import by keeping heavy UI/API graphs off the alpha entry (~468 KB → ~118 KB sync, about −75%).
• Replaced deprecated NavItemBlueprint with PageBlueprint title + icon, and update the NFS demo sidebar to render auto-discovered navItems.
• Extracted a thin BulkImportIcon and move getApi out of repository-utils so the alpha/API path no longer pulls sidebar, permissions, or the full icons/utils UI graph.
• Remaining NFS vs OFS gap (~90 KB) is mostly @backstage/frontend-plugin-api blueprint wiring and its zod schema dependencies (ApiBlueprint / PageBlueprint), not plugin UI. The leftover zod cost is inherent to NFS page/API blueprints.

NFS alpha expose summary

Metric	BEFORE	AFTER	Δ
Sync chunks	5	3	-2
Sync size	467.6 KB	117.8 KB	-349.8 KB (-74.8%)
Async chunks	201	204	+3
Async size (listed)	1937.4 KB	2320.7 KB	+383.3 KB

✔️ Checklist

• A changeset describing the change and affected packages. (more info)
• Added or Updated documentation
• Tests for new functionality and regression tests for bug fixes
• Screenshots attached (for UI changes)

[rhdh-gh-app]

Changed Packages

Package Name	Package Path	Changeset Bump	Current Version
app	workspaces/bulk-import/packages/app	none	v0.0.1
@red-hat-developer-hub/backstage-plugin-bulk-import	workspaces/bulk-import/plugins/bulk-import	patch	v7.3.6

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud