chore(instill-hub): add visibility all label to dropdown (#947)

Because

- add visibility all label to dropdown

This commit

- add visibility all label to dropdown

packages/toolkit/src/view/pipeline/view-pipelines/ViewPipelines.tsx

@@ -120,6 +120,7 @@ export const ViewPipelines = ({
               </Select.Trigger>
               <Select.Content>
                 <Select.Group>
+                  <Select.Item value="VISIBILITY_UNSPECIFIED">All</Select.Item>
                   <Select.Item value="VISIBILITY_PUBLIC">Public</Select.Item>
                   <Select.Item value="VISIBILITY_PRIVATE">Private</Select.Item>
                 </Select.Group>