fix: system-hub api.js - Remove expect auto-extraction

Same fix as secubox: removed expect: { modules: [] } from RPC declarations.
This was auto-extracting the modules property, causing components list to be empty.

Now both SecuBox Modules and System Hub Components work correctly.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

luci-app-system-hub/htdocs/luci-static/resources/system-hub/api.js

@@ -91,14 +91,14 @@ var callSaveSettings = rpc.declare({
 var callGetComponents = rpc.declare({
 	object: 'luci.system-hub',
 	method: 'get_components',
-	expect: { modules: [] }
+	expect: {}
 });
 
 var callGetComponentsByCategory = rpc.declare({
 	object: 'luci.system-hub',
 	method: 'get_components_by_category',
 	params: ['category'],
-	expect: { modules: [] }
+	expect: {}
 });
 
 return baseclass.extend({