[ui] Allow creating a saved selection from lineage view (#25415)

## Summary & Motivation

When clicking "Save selection" from the Asset Graph Explorer, the catalog view dialog was not capturing the current graph's asset selection (the `opsQuery` from the explorer path). Instead, it relied solely on `currentAssetSelection` from the `CatalogViewContext`, which may not reflect what's displayed in the graph.

This fix passes the `explorerPath.opsQuery` directly to `CreateCatalogViewButton` as an `assetSelection` prop. When provided, the button sets the internal asset selection before opening the create view dialog, ensuring the correct selection is pre-populated. The visibility logic also now uses this explicit selection when determining whether to render the button.

Additionally, the default label casing was corrected from `'Save Selection'` to `'Save selection'`.

![Screenshot 2026-06-09 at 09.21.59.png](https://app.graphite.com/user-attachments/assets/272228ca-f0b0-44b5-b2aa-de1524994594.png)

## Test Plan

- Open the Asset Graph Explorer with an asset selection query active
- Verify the "Save selection" button appears and, when clicked, opens the create view dialog with the correct asset selection pre-filled
- Verify the button still behaves correctly when no `assetSelection` prop is provided (falls back to `currentAssetSelection`)

## Changelog

[ui] When filtering assets in the lineage view with the selection input, a "Save selection" button will allow creating a saved selection directly from the input value.

Internal-RevId: 4bcd45a7c0406f60c64aedd443ed3d8e756e1c22

Author: hellendag

js_modules/ui-core/src/asset-graph/AssetGraphExplorer.tsx

@@ -831,7 +831,11 @@ const AssetGraphExplorerWithData = ({
                           }}
                         />
                       </div>
-                      <CreateCatalogViewButton />
+                      <CreateCatalogViewButton
+                        assetSelection={
+                          viewType === AssetGraphViewType.GLOBAL ? explorerPath.opsQuery : undefined
+                        }
+                      />
                       <AssetLiveDataRefreshButton />
                     </>
                   )}