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fix(security): isolate /proxy= cookie jars across Spaces (GHSA-2mr9-9r47-px2g)

fix(security): isolate /proxy= cookie jars across Spaces (GHSA-2mr9-9r47-px2g): a task in repo2rlenv-v083-pr diff (Harbor dataset). Title: fix(security): isolate /proxy= cookie jars across Spaces (GHSA-2mr9-9r47-px2g)

The task

**Title:** fix(security): isolate /proxy= cookie jars across Spaces (GHSA-2mr9-9r47-px2g)

Part of AdithyaSK/repo2rlenv-v083-pr_diff.