AG-53262: Fix e2e fixture imports to use @adguard/dnr-converter

The rule-limits e2e fixture imported DeclarativeRule, ResourceType,
RuleActionType, and getRuleSetPath from @adguard/tsurlfilter deep paths
(declarative-converter and declarative-converter-utils) which no longer
exist. These symbols are exported from @adguard/dnr-converter instead.

This fixes both the Lint (TS2307) and E2E (cannot find package) CI
failures.

Author: 105th

tests/e2e/helpers/rule-limits-fixture.ts

@@ -26,8 +26,8 @@ import {
     type DeclarativeRule,
     ResourceType,
     RuleActionType,
-} from '@adguard/tsurlfilter/es/declarative-converter';
-import { getRuleSetPath } from '@adguard/tsurlfilter/es/declarative-converter-utils';
+    getRuleSetPath,
+} from '@adguard/dnr-converter';
 
 /**
  * Number of rules to generate per oversized ruleset.