[BEEEP] [PM-10132] Upgrade storybook to v8 (#10288)

Upgrade storybook to version v8 which is a major upgrade. Storybook provides an
upgrade wizard which did most of the work.

- Ran npx storybook upgrade.
- Manually updated `remark-gfm` since the newer mdx requires v 4.
- Migrated all old stories still using `Story` to `StoryObj`.

libs/components/src/banner/banner.stories.ts

@@ -48,7 +48,7 @@ export const Premium: Story = {
   args: {
     bannerType: "premium",
   },
-  render: (args: BannerComponent) => ({
+  render: (args) => ({
     props: args,
     template: `
       <bit-banner [bannerType]="bannerType" (onClose)="onClose($event)" [showClose]=showClose>
@@ -93,7 +93,7 @@ export const HideClose: Story = {
 
 export const Stacked: Story = {
   args: {},
-  render: (args: BannerComponent) => ({
+  render: (args) => ({
     props: args,
     template: `
       <bit-banner bannerType="premium" (onClose)="onClose($event)">