exclude synapse database for othersite.m.localhost

.gitignore

@@ -8,6 +8,7 @@ dist-ssr
 .idea/
 public/config.json
 backend/synapse_tmp/*
+backend/synapse_tmp_othersite/*
 /coverage
 config.json
 
@@ -28,4 +29,4 @@ yarn-error.log
 /test-results/
 /playwright-report/
 /blob-report/
-/playwright/.cache/
+/playwright/.cache/