Fix/virtual-cache ref unification scope #10692

Job	Run time
YAML Lint	18s
Go Lint	1m 31s
Rego PR checks	1m 28s
Generate Code	1m 9s
WASM	8m 6s
Go Build (linux amd64)	2m 24s
Check Generated	37s
Go Test (linux)	4m 9s
Go Build (linux arm64)	2m 7s
Go compat build/test (ubuntu-22.04, 1.21)	4m 5s
Go Test (darwin)	4m 20s
Go Build (linux arm64GO_TAGS="-tags=opa_no_oci")	2m 11s
Go compat build/test (macos-14, 1.21)	3m 57s
Go Race Detector	6m 26s
Go Build (windows amd64)	2m 17s
Go Build (darwin amd64)	1m 41s
Go Build (darwin arm64)	51s
smoke-test-binaries (linux, ubuntu-22.04, opa_linux_amd64, amd64)	16s
docker image smoke test	25s
smoke-test-binaries (linux, ubuntu-22.04, opa_linux_amd64_static, amd64, disabled)	12s
smoke-test-binaries (darwin, macos-13, opa_darwin_amd64, amd64)	34s
smoke-test-binaries (darwin, macos-14, opa_darwin_arm64_static, arm64, disabled)	15s
smoke-test-binaries (windows, windows-latest, opa_windows_amd64.exe, amd64)	23s
	49m 42s

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