Replace index with id in actions routes (#36842)

This PR migrates the web Actions run/job routes from index-based
`runIndex` or `jobIndex` to database IDs.

**⚠️ BREAKING ⚠️**: Existing saved links/bookmarks that use the old
index-based URLs will no longer resolve after this change.

Improvements of this change:
- Previously, `jobIndex` depended on list order, making it hard to
locate a specific job. Using `jobID` provides stable addressing.
- Web routes now align with API, which already use IDs.
- Behavior is closer to GitHub, which exposes run/job IDs in URLs.
- Provides a cleaner base for future features without relying on list
order.
- #36388 this PR improves the support for reusable workflows. If a job
uses a reusable workflow, it may contain multiple child jobs, which
makes relying on job index to locate a job much more complicated

---------

Signed-off-by: Zettat123 <zettat123@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

models/migrations/fixtures/Test_FixCommitStatusTargetURLToUseRunAndJobID/action_run.yml

@@ -0,0 +1,9 @@
+# type ActionRun struct {
+#   ID     int64 `xorm:"pk autoincr"`
+#   RepoID int64 `xorm:"index"`
+#   Index  int64
+# }
+-
+  id: 106
+  repo_id: 1
+  index: 7

models/migrations/fixtures/Test_FixCommitStatusTargetURLToUseRunAndJobID/action_run_job.yml

@@ -0,0 +1,10 @@
+# type ActionRunJob struct {
+#   ID    int64 `xorm:"pk autoincr"`
+#   RunID int64 `xorm:"index"`
+# }
+-
+  id: 530
+  run_id: 106
+-
+  id: 531
+  run_id: 106

models/migrations/fixtures/Test_FixCommitStatusTargetURLToUseRunAndJobID/commit_status.yml

@@ -0,0 +1,29 @@
+# type CommitStatus struct {
+#   ID        int64 `xorm:"pk autoincr"`
+#   RepoID    int64 `xorm:"index"`
+#   TargetURL string
+# }
+-
+  id: 10
+  repo_id: 1
+  target_url: /testuser/repo1/actions/runs/7/jobs/0
+-
+  id: 11
+  repo_id: 1
+  target_url: /testuser/repo1/actions/runs/7/jobs/1
+-
+  id: 12
+  repo_id: 1
+  target_url: /otheruser/badrepo/actions/runs/7/jobs/0
+-
+  id: 13
+  repo_id: 1
+  target_url: /testuser/repo1/actions/runs/10/jobs/0
+-
+  id: 14
+  repo_id: 1
+  target_url: /testuser/repo1/actions/runs/7/jobs/3
+-
+  id: 15
+  repo_id: 1
+  target_url: https://ci.example.com/build/123

models/migrations/fixtures/Test_FixCommitStatusTargetURLToUseRunAndJobID/commit_status_summary.yml

@@ -0,0 +1,19 @@
+# type CommitStatusSummary struct {
+#   ID        int64  `xorm:"pk autoincr"`
+#   RepoID    int64  `xorm:"index"`
+#   SHA       string `xorm:"VARCHAR(64) NOT NULL"`
+#   State     string `xorm:"VARCHAR(7) NOT NULL"`
+#   TargetURL string
+# }
+-
+  id: 20
+  repo_id: 1
+  sha: "012345"
+  state: success
+  target_url: /testuser/repo1/actions/runs/7/jobs/0
+-
+  id: 21
+  repo_id: 1
+  sha: "678901"
+  state: success
+  target_url: https://ci.example.com/build/123

models/migrations/fixtures/Test_FixCommitStatusTargetURLToUseRunAndJobID/repository.yml

@@ -0,0 +1,9 @@
+# type Repository struct {
+#   ID        int64  `xorm:"pk autoincr"`
+#   OwnerName string
+#   Name      string
+# }
+-
+  id: 1
+  owner_name: testuser
+  name: repo1