Add recent versions of py-cylc-flow, py-cylc-rose, py-cylc-uiserver, and their dependency py-protobuf (spack PR #48052); pull spack PRs #48251 (py-scipy@1.14 - intel classic conflict) and #48478 (comment out py-arrow@1.3.0)

Add recent versions of py-cylc-flow, py-cylc-rose, py-cylc-uiserver, and their dependency py-protobuf (spack PR #48052); pull spack PRs #48251 (py-scipy@1.14 - intel classic conflict) and #48478 (comment out py-arrow@1.3.0) #751