codeintel: Fix background job context auth

[efritz]

Ensure all code intel background jobs run with an internal context. All repos should be visible to the periodic jobs that synchronize, reconcile, and process data. User-level visibility is always considered at retrieval time.

Test plan

Tested locally.

[sourcegraph-bot]

Codenotify: Notifying subscribers in CODENOTIFY files for diff 5284454...c19e350.

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File(s)

@Strum355

enterprise/internal/codeintel/autoindexing/internal/background/scheduler/BUILD.bazel enterprise/internal/codeintel/autoindexing/internal/background/scheduler/job_scheduler.go enterprise/internal/codeintel/policies/internal/background/repository_matcher/BUILD.bazel enterprise/internal/codeintel/policies/internal/background/repository_matcher/job.go enterprise/internal/codeintel/sentinel/internal/background/downloader/BUILD.bazel enterprise/internal/codeintel/sentinel/internal/background/downloader/job.go enterprise/internal/codeintel/sentinel/internal/background/matcher/BUILD.bazel enterprise/internal/codeintel/sentinel/internal/background/matcher/job.go enterprise/internal/codeintel/shared/background/BUILD.bazel enterprise/internal/codeintel/shared/background/janitor_job.go enterprise/internal/codeintel/shared/background/pipeline_job.go enterprise/internal/codeintel/uploads/internal/background/backfiller/BUILD.bazel enterprise/internal/codeintel/uploads/internal/background/backfiller/job_backfill.go enterprise/internal/codeintel/uploads/internal/background/commitgraph/BUILD.bazel enterprise/internal/codeintel/uploads/internal/background/commitgraph/job_commitgraph.go enterprise/internal/codeintel/uploads/internal/background/expirer/BUILD.bazel enterprise/internal/codeintel/uploads/internal/background/expirer/job_expirer.go

[github-actions]

The backport to 5.0 failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-5.0 5.0
# Navigate to the new working tree
cd .worktrees/backport-5.0
# Create a new branch
git switch --create backport-51591-to-5.0
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 e0681853b0d6d9b2606a8031186fab969fb57d7d
# Push it to GitHub
git push --set-upstream origin backport-51591-to-5.0
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-5.0

Then, create a pull request where the base branch is 5.0 and the compare/head branch is backport-51591-to-5.0.