Provide hash from project-based route handler

Bug: Issue 7026
Change-Id: I22119ba2d290ff2b4f558cae7199b39d64cc34c8

polygerrit-ui/app/elements/core/gr-router/gr-router.js

diff --git a/polygerrit-ui/app/elements/core/gr-router/gr-router.js b/polygerrit-ui/app/elements/core/gr-router/gr-router.js
index ede5b7a..6b418d1 100644
--- a/polygerrit-ui/app/elements/core/gr-router/gr-router.js
+++ b/polygerrit-ui/app/elements/core/gr-router/gr-router.js
@@ -460,6 +460,7 @@
             patchNum: ctx.params[6],
             path: ctx.params[8],
             view: ctx.params[8] ? Gerrit.Nav.View.DIFF : Gerrit.Nav.View.CHANGE,
+            hash: ctx.hash,
           };
           normalizePatchRangeParams(params);
           app.params = params;