web: provide storybook demos and docs for existing tests (#11651)

* Added tests and refinements as tests indicate.

* Building out the test suite.

* web: test the simple things. Fix what the tests revealed.

- Move `EmptyState.test.ts` into the `./tests` folder.
- Provide unit tests for:
  - Alert
  - Divider
  - Expand
  - Label
  - LoadingOverlay
- Give all tested items an Interface and a functional variant for rendering
- Give Label an alternative syntax for declaring alert levels
- Remove the slot name in LoadingOverlay
  - Change the slot call in `./enterprise/rac/index.ts` to not need the slot name as well
- Change the attribute names `topMost`, `textOpen`, and `textClosed` to `topmost`, `text-open`, and
  `text-closed`, respectively.
  - Change locations in the code where those are used to correspond

** Why interfaces: **

Provides another check on the input/output boundaries of our elements, gives Storybook and
WebdriverIO another validation to check, and guarantees any rendering functions cannot be passed
invalid property names.

** Why functions for rendering: **

Providing functions for rendering gets us one step closer to dynamically defining our forms-in-code
at runtime without losing any type safety.

** Why rename the attributes: **

A *very* subtle bug:
[Element:setAttribute()](https://developer.mozilla.org/en-US/docs/Web/API/Element/setAttribute)
automatically "converts an attribute name to all lower-case when called on an HTML element in an
HTML document." The three attributes renamed are all treated *as* attributes, either classic boolean
or stringly-typed attributes, and attempting to manipulate them with `setAttribute()` will fail.

All of these attributes are presentational; none of them end up in a transaction with the back-end,
so kebab-to-camel conversions are not a concern.

Also, ["topmost" is one word](https://www.merriam-webster.com/dictionary/topmost).

** Why remove the slot name: **

Because there was only one slot.  A name is not needed.

* Fix minor spelling error.

* First pass at a custom, styled input object.

* .

* web: Demo the simple things. Fix things the Demo says need fixing.

- Move the Element's stories into a `./stories` folder
- Provide stories for (these are the same ones "provided tests for" in the [previous
  PR](https://github.com/goauthentik/authentik/pull/11633))
  - Alert
  - Divider
  - Expand
  - Label
  - LoadingOverlay
- Provide Storybook documentation for:
  - AppIcon
  - ActionButton
  - AggregateCard
  - AggregatePromiseCard
  - QuickActionsCard
  - Alert
  - Divider
  - EmptyState
  - Expand
  - Label
  - LoadingOverlay
  - ApplicationEmptyState
- Fix a bug in LoadingOverlay; naming error in nested slots caused any message attached to the
  overlay to not sow up correctly.
- Revise AppIcon to be independent of authentik; it just cares if the data has a name or an icon
  reference, it does not need to know about `Application` objects. As such, it's an *element*, not a
  *component*, and I've moved it into the right location, and updated the few places it is used to
  match.

* Prettier has opinions with which I sometimes diverge.

* Found a bug! Although pf-m-xl was defined as a legal size, there was no code to handle drawing something XL!

* Found a few typos and incorrect API descriptions.

web/src/user/LibraryApplication/index.ts

@@ -1,6 +1,6 @@
 import { PFSize } from "@goauthentik/common/enums.js";
 import { truncateWords } from "@goauthentik/common/utils";
-import "@goauthentik/components/ak-app-icon";
+import "@goauthentik/elements/AppIcon";
 import { AKElement, rootInterface } from "@goauthentik/elements/Base";
 import "@goauthentik/elements/Expand";
 import "@goauthentik/user/LibraryApplication/RACLaunchEndpointModal";
@@ -115,7 +115,6 @@ export class LibraryApplication extends AKElement {
 
         const classes = { "pf-m-selectable": this.selected, "pf-m-selected": this.selected };
         const styles = this.background ? { background: this.background } : {};
-
         return html` <div
             class="pf-c-card pf-m-hoverable pf-m-compact ${classMap(classes)}"
             style=${styleMap(styles)}
@@ -125,7 +124,11 @@ export class LibraryApplication extends AKElement {
                     href="${ifDefined(this.application.launchUrl ?? "")}"
                     target="${ifDefined(this.application.openInNewTab ? "_blank" : undefined)}"
                 >
-                    <ak-app-icon size=${PFSize.Large} .app=${this.application}></ak-app-icon>
+                    <ak-app-icon
+                        size=${PFSize.Large}
+                        name=${this.application.name}
+                        icon=${ifDefined(this.application.metaIcon || undefined)}
+                    ></ak-app-icon>
                 </a>
             </div>
             <div class="pf-c-card__title">${this.renderLaunch()}</div>