Change typing for after/before window/application start (#7342)

- Now the callback is provided with an object containing either
  `mainDi` or `windowDi` fields. This should help with confusion
  over which environment the `di` is for

Signed-off-by: Sebastian Malton <sebastian@malton.name>

packages/core/src/features/helm-charts/upgrade-chart/upgrade-chart-new-tab.test.ts

@@ -35,7 +35,7 @@ describe("New Upgrade Helm Chart Dock Tab", () => {
     builder = getApplicationBuilder();
     builder.setEnvironmentToClusterFrame();
 
-    builder.beforeWindowStart((windowDi) => {
+    builder.beforeWindowStart(({ windowDi }) => {
       requestHelmReleaseConfigurationMock = asyncFn();
       windowDi.override(requestHelmReleaseConfigurationInjectable, () => requestHelmReleaseConfigurationMock);