Fall back to getting checks without suite for enterprise

[alexr00]

Fixes #8378

[Copilot]

Pull request overview

This PR attempts to fix issue #8378 where viewing PR descriptions in GitHub Enterprise with Data Residency results in "GraphQL error: Not Found" errors. The fix makes all Enterprise instances fall back to using a simplified GraphQL query (GetChecksWithoutSuite) that omits the checkSuite field.

Changes:

• Modified error handling in getStatusChecks() to always use the fallback query for Enterprise instances

Comments suppressed due to low confidence (1)

src/github/githubRepository.ts:1671

• This fix may cause performance degradation for Enterprise instances. The GetChecksWithoutSuite query omits the checkSuite field, which means it doesn't return app information, workflow run details, and event data for CheckRuns (see lines 1097-1108 in queriesShared.gql). This information is used later in the code (lines 1702-1714) to populate workflow names and event details.

For Enterprise instances that do support the checkSuite field, this change forces them to always make incomplete queries, potentially degrading the user experience by losing this contextual information about their checks.

			if (isSamlError(e) || this.remote.isEnterprise) {