fix(ci): align shared-auth build outputPath with tsconfig.lib.json outDir

portal-bff/tsconfig.app.json declares a TypeScript project reference
to libs/shared/auth, so when webpack runs tsc against that tsconfig
it validates that the referenced project's declarations exist at the
location libs/shared/auth/tsconfig.lib.json declares as outDir
(dist/out-tsc/libs/shared/auth). But nx's @nx/js:tsc executor was
emitting them to dist/libs/shared/auth (the project.json outputPath),
so tsc fails with TS6305 "Output file ... has not been built".

The mismatch was harmless locally because a manual `tsc --build`
during development populated both directories. Fresh CI runners
only run nx's executor, so only one directory was populated.

Aligning outputPath to dist/out-tsc/libs/shared/auth makes both
agree. shared-auth is the first lib in the workspace that's
consumed by portal-bff in a way that triggers tsc project-reference
validation; the SPA-targeted libs (shared-util, shared-tokens)
ride the same mismatch but don't hit it because the Angular build
pipeline doesn't validate project references the same way.

libs/shared/auth/project.json

@@ -9,7 +9,7 @@
       "executor": "@nx/js:tsc",
       "outputs": ["{options.outputPath}"],
       "options": {
-        "outputPath": "dist/libs/shared/auth",
+        "outputPath": "dist/out-tsc/libs/shared/auth",
         "main": "libs/shared/auth/src/index.ts",
         "tsConfig": "libs/shared/auth/tsconfig.lib.json",
         "assets": ["libs/shared/auth/*.md"]