fix: fix data access policies condition logic

Data access policies conditions should be joined via AND operator,
but the initial implementation used OR by mistake

Author: bsod90

packages/cubejs-server-core/src/core/CompilerApi.js

@@ -205,7 +205,7 @@ export class CompilerApi {
         if (typeof b !== 'boolean') {
           throw new Error(`Access policy condition must return boolean, got ${JSON.stringify(b)}`);
         }
-        return a || b;
+        return a && b;
       });
     }
     return true;