fix shift-click anchor drift and remove dead stopPropagation constant

- Remove dead stopPropagation const in resource.tsx (replaced by handleSelectRowClick)
- Reset lastSelectedIndexRef when visibleRowIds changes so search/filter/folder navigation doesn't leave a stale anchor that produces wrong ranges on the next shift-click
- Update lastSelectedIndexRef in handleRowContextMenu when right-clicking resets selection to a single item, so the anchor matches the newly-selected row
- Add visibleRowIds to handleRowContextMenu deps (now reads it to compute anchor index)
- Remove moveItems.mutateAsync from handleContextMenuMove deps per project convention (.mutateAsync is stable in TanStack v5)

Author: waleedlatif1

apps/sim/app/workspace/[workspaceId]/components/resource/resource.tsx

@@ -94,8 +94,6 @@ interface ResourceProps {
 const EMPTY_CELL_PLACEHOLDER = '-  -  -'
 const SKELETON_ROW_COUNT = 5
 
-const stopPropagation = (e: React.MouseEvent) => e.stopPropagation()
-
 /**
  * Shared page shell for resource list pages (tables, files, knowledge, schedules, logs).
  * Renders the header, toolbar with search, and a data table from column/row definitions.

apps/sim/app/workspace/[workspaceId]/files/files.tsx

@@ -538,6 +538,7 @@ export function Files() {
   )
 
   useEffect(() => {
+    lastSelectedIndexRef.current = -1
     setSelectedRowIds((prev) => {
       const visible = new Set(visibleRowIds)
       const next = new Set(Array.from(prev).filter((id) => visible.has(id)))
@@ -1128,11 +1129,12 @@ export function Files() {
           ? { kind: 'folder', id: parsed.id, folder: item as WorkspaceFileFolderApi }
           : { kind: 'file', id: parsed.id, file: item as WorkspaceFileRecord }
       if (!selectedRowIds.has(rowId)) {
+        lastSelectedIndexRef.current = visibleRowIds.indexOf(rowId)
         setSelectedRowIds(new Set([rowId]))
       }
       openContextMenu(e)
     },
-    [folders, openContextMenu, selectedRowIds]
+    [folders, openContextMenu, selectedRowIds, visibleRowIds]
   )
 
   const handleContextMenuOpen = useCallback(() => {
@@ -1212,7 +1214,7 @@ export function Files() {
         toast.error(toError(error).message)
       }
     },
-    [moveItems.mutateAsync, workspaceId, selectedFileIds, selectedFolderIds, closeContextMenu]
+    [workspaceId, selectedFileIds, selectedFolderIds, closeContextMenu]
   )
 
   const handleContentContextMenu = useCallback(