feat(github-enterprise): Route installation_repositories to control silo (#112245)

Remove the should_route_to_control_silo override in GithubEnterpriseRequestParser so it inherits the parent's routing, which sends installation_repositories events to control silo.

We do this to make sure the webhooks for GHE will also route to the right place

<!-- Describe your PR here. -->

Author: wedamija

src/sentry/middleware/integrations/parsers/github_enterprise.py

@@ -4,11 +4,8 @@
 from collections.abc import Mapping
 from typing import Any
 
-from django.http import HttpRequest
-
 from sentry.hybridcloud.outbox.category import WebhookProviderIdentifier
 from sentry.integrations.github.webhook import get_github_external_id
-from sentry.integrations.github.webhook_types import GITHUB_WEBHOOK_TYPE_HEADER, GithubWebhookType
 from sentry.integrations.github_enterprise.webhook import GitHubEnterpriseWebhookEndpoint, get_host
 from sentry.integrations.types import IntegrationProviderSlug
 from sentry.middleware.integrations.parsers.github import GithubRequestParser
@@ -21,13 +18,6 @@ class GithubEnterpriseRequestParser(GithubRequestParser):
     webhook_identifier = WebhookProviderIdentifier.GITHUB_ENTERPRISE
     webhook_endpoint = GitHubEnterpriseWebhookEndpoint
 
-    def should_route_to_control_silo(
-        self, parsed_event: Mapping[str, Any], request: HttpRequest
-    ) -> bool:
-        # GHE only routes installation events to control silo.
-        # installation_repositories is not yet supported for GHE.
-        return request.META.get(GITHUB_WEBHOOK_TYPE_HEADER) == GithubWebhookType.INSTALLATION
-
     def _get_external_id(self, event: Mapping[str, Any]) -> str | None:
         host = get_host(request=self.request)
         if not host: