fix: fix storybook build cache not being used by tests in CI (#5451)

TL;DR:
- removed `--configuration={args.scope}` from `storybook:static:test`
for the `storybook:static` part, as it was making `front-sb-test` jobs
in CI not reuse the cache from the `front-sb-build` job and re-build
storybook every time.
- replaced it with a new `test` configuration which optimizes storybook
build for tests and builds storybook 2x faster.

## Fix storybook:build cache usage in CI

`storybook:static:test` executes two scripts in parallel:
1. `storybook:static`, which depends on `storybook:build`
1.a. it builds storybook first with `storybook:build`, the output
directory is `storybook-static`.
1.b. then it launches an `http-server`, using what has been built in
`storybook-static`
2. `storybook:test` to execute tests (needs the storybook http-server to
be running)

When passing `--configuration=pages` or `--configuration=modules` to
`storybook:static` from step 1, those configurations are passed to the
`storybook:build` script from step 1.a as well.

But for Nx `storybook:build` and `storybook:build --configuration=pages`
(or `modules`) are not the same command, therefore one does not reuse
the cache of the other because they could output completely different
things.

As `front-sb-test` jobs are passing `--configuration={args.scope}` to
`storybook:static`, the cache of the previously executed
`storybook:build` (from `front-sb-build`) is not reused and therefore
each job re-builds Storybook with its own scope, which increases CI
time.

### Solution

- Removed scope configurations from `storybook:static` and
`storybook:build` scripts to avoid confusion.
- `storybook:test` and `storybook:dev` can keep scope configurations as
they can be useful and this doesn't impact storybook build cache in CI.

### Improve Storybook build time for testing

Added the `test` configuration to `storybook:build` and
`storybook:static` which makes Storybook build time 2x faster. It
disables addons that slow down build time and are not used in tests.

nx.json

@@ -116,6 +116,11 @@
         "command": "storybook build",
         "output-dir": "storybook-static",
         "config-dir": ".storybook"
+      },
+      "configurations": {
+        "test": {
+          "command": "storybook build --test"
+        }
       }
     },
     "storybook:dev": {
@@ -138,6 +143,9 @@
         "host": "localhost",
         "port": 6006,
         "silent": true
+      },
+      "configurations": {
+        "test": {}
       }
     },
     "storybook:coverage": {
@@ -192,7 +200,7 @@
       "executor": "nx:run-commands",
       "options": {
         "commands": [
-          "npx concurrently --kill-others --success=first -n SB,TEST 'nx storybook:static {projectName} --port={args.port}' 'npx wait-on tcp:{args.port} && nx storybook:test {projectName} --port={args.port}'"
+          "npx concurrently --kill-others --success=first -n SB,TEST 'nx storybook:static {projectName} --port={args.port} --configuration=test' 'npx wait-on tcp:{args.port} && nx storybook:test {projectName} --port={args.port}'"
         ],
         "port": 6006
       }