Add AddOrRemoveAllButton to BundleSearchResult

[TakshPatel5821]

Description

Adds an "add all / remove all" button to bundle search results, so a bundle containing multiple graphable entities (vertices and/or edges, including nested bundles) can be added to or removed from the graph in one click, instead of adding each entity individually.

This follows the same pattern already used elsewhere in the search sidebar:

• SearchResultsList's top-level AddAllToGraphButton (bulk add/remove across all results)
• VertexSearchResult / EdgeSearchResult's per-entity AddOrRemoveButton

The new AddOrRemoveAllButton:

• Is hidden when the bundle has no graphable entities.
• Shows an add icon when any entity in the bundle isn't yet in the graph; clicking adds the rest (already-added entities are left alone).
• Shows a remove icon once every entity in the bundle has been added; clicking removes all of them.
• Uses getAllGraphableEntities (not getAllGraphableEntityIds) since bundle.values is PatchedResultEntity[], which has different entityType values (patched-vertex/patched-edge) than the raw ResultEntity[] the id-only helper expects.

Validation

• tsc --noEmit passes with no errors.
• oxfmt --check passes on the changed file.
• Existing tests in connector/entities/entities.test.ts (covering getAllGraphableEntities) still pass.
• Manually reviewed against the existing AddAllToGraphButton / AddOrRemoveButton patterns for consistency (icon-only ghost button, stopPropagation on click so it doesn't toggle the collapsible, size="icon-small", tooltip text).

Related Issues

Fixes #1221