Add display name to namespace context for improved debuggability

Adding the `displayName` improves stacks displayed in error console
and React dev tools so the provided is shown as `Namespace.Provider`
instead of the default `Context.Provider` (of which there are already
a few…). This makes it easier to identify the relevant code / component.

src/api/utils.js

@@ -115,6 +115,7 @@ export function getTektonAPI(
 }
 
 export const NamespaceContext = React.createContext();
+NamespaceContext.displayName = 'Namespace';
 
 function getResourceVersion(resource) {
  return parseInt(resource.metadata.resourceVersion, 10);