Fix unique index condition for quiz_candidate with soft deletes

- Updated condition in unique index definition of `quiz_candidate` to add parentheses for clarity.
- Adjusted related migration to reflect the revised condition.

config/reference.php

@@ -1309,6 +1309,7 @@ use Symfony\Component\Config\Loader\ParamConfigurator as Param;
  *         traces_sampler?: scalar|Param|null,
  *         profiles_sample_rate?: float|Param, // The sampling factor to apply to profiles. A value of 0 will deny sending any profiles, and a value of 1 will send all profiles. Profiles are sampled in relation to traces_sample_rate
  *         enable_logs?: bool|Param,
+ *         log_flush_threshold?: mixed, // Default: null
  *         enable_metrics?: bool|Param, // Default: true
  *         attach_stacktrace?: bool|Param,
  *         attach_metric_code_locations?: bool|Param,
@@ -1318,6 +1319,7 @@ use Symfony\Component\Config\Loader\ParamConfigurator as Param;
  *         spotlight?: bool|Param,
  *         spotlight_url?: scalar|Param|null,
  *         release?: scalar|Param|null, // Default: "%env(default::SENTRY_RELEASE)%"
+ *         org_id?: int|Param,
  *         server_name?: scalar|Param|null,
  *         ignore_exceptions?: list<scalar|Param|null>,
  *         ignore_transactions?: list<scalar|Param|null>,
@@ -1328,6 +1330,7 @@ use Symfony\Component\Config\Loader\ParamConfigurator as Param;
  *         before_send_log?: scalar|Param|null,
  *         before_send_metric?: scalar|Param|null,
  *         trace_propagation_targets?: mixed,
+ *         strict_trace_continuation?: bool|Param,
  *         tags?: array<string, scalar|Param|null>,
  *         error_types?: scalar|Param|null,
  *         max_breadcrumbs?: int|Param,
@@ -1352,11 +1355,13 @@ use Symfony\Component\Config\Loader\ParamConfigurator as Param;
  *         enabled?: bool|Param, // Default: false
  *         capture_soft_fails?: bool|Param, // Default: true
  *         isolate_breadcrumbs_by_message?: bool|Param, // Default: false
+ *         isolate_context_by_message?: bool|Param, // Default: false
  *     },
  *     tracing?: bool|array{
  *         enabled?: bool|Param, // Default: true
  *         dbal?: bool|array{
  *             enabled?: bool|Param, // Default: true
+ *             ignore_prepare_spans?: bool|Param, // Default: false
  *             connections?: list<scalar|Param|null>,
  *         },
  *         twig?: bool|array{
@@ -1376,6 +1381,7 @@ use Symfony\Component\Config\Loader\ParamConfigurator as Param;
  * @psalm-type SymfonycastsSassConfig = array{
  *     root_sass?: list<scalar|Param|null>,
  *     binary?: scalar|Param|null, // The Sass binary to use // Default: null
+ *     search_for_binary?: scalar|Param|null, // Whether to search for the Sass binary in the system PATH // Default: true
  *     sass_options?: array{
  *         style?: "compressed"|"expanded"|Param, // The style of the generated CSS: compressed or expanded. // Default: "expanded"
  *         charset?: bool|Param, // Whether to include the charset declaration in the generated Sass.