fix(server): Use tsconfig.json for serverTestHelpers rollup build

The serverTestHelpers rollup config was using `tsconfig: false` with inline
compiler options, which bypassed TypeScript project references. During npm
workspace publishing, this caused the build to fail to resolve the updated
`@atxp/common` types (specifically the new `createSpendPermission` method
on the Account type).

By using the proper tsconfig.json, the build correctly follows project
references and resolves workspace dependencies.

Fixes publish failure: https://github.com/atxp-dev/sdk/actions/runs/21013783817

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: badjer

packages/atxp-server/rollup.config.js

@@ -35,19 +35,9 @@ const serverTestHelpersConfigs = [
     },
     plugins: [
       typescript({
-        tsconfig: false,
-        compilerOptions: {
-          target: 'es2020',
-          module: 'esnext',
-          lib: ['es2020', 'dom'],
-          moduleResolution: 'node',
-          allowSyntheticDefaultImports: true,
-          esModuleInterop: true,
-          skipLibCheck: true,
-          strict: true,
-          declaration: false,
-          sourceMap: true
-        }
+        tsconfig: './tsconfig.json',
+        declaration: false,
+        declarationMap: false
       }),
       resolve({ preferBuiltins: true, exportConditions: ['node'] }),
       commonjs(),