Remove legacy `-uncurried` flag and some leftovers #9367

Job	Run time
test-devcontainer	14m 2s
build-compiler (windows-2025, 5.3.0, true, win32-x64, x86_64-pc-windows-gnu, .exe)	5m 49s
build-compiler (macos-15-intel, 5.3.0, true, darwin-x64, x86_64-apple-darwin)	7m 19s
build-compiler (ubuntu-24.04, ocaml-variants.5.0.0+options,ocaml-option-static, linux-x64, x86_64...	2m 43s
build-compiler (ubuntu-24.04-arm, ocaml-variants.5.3.0+options,ocaml-option-static, true, true, t...	4m 4s
build-compiler (ubuntu-24.04, ocaml-variants.5.3.0+options,ocaml-option-static, true, true, linux...	2m 53s
build-compiler (macos-15, 5.3.0, true, darwin-arm64, aarch64-apple-darwin)	5m 12s
pkg-pr-new	1m 5s
api-docs	1m 43s
test-integration-rewatch (macos-15)	1m 58s
test-integration-rewatch (ubuntu-24.04)	1m 17s
test-integration-rewatch (macos-15-intel)	3m 5s
test-integration-rewatch (ubuntu-24.04-arm)	1m 9s
test-installation-pnpm (ubuntu-24.04)	14s
test-installation-pnpm (macos-15-intel)	28s
test-installation-pnpm (macos-15)	24s
test-installation-pnpm (ubuntu-24.04-arm)	19s
test-installation-npm (macos-15)	22s
test-installation-npm (ubuntu-24.04)	16s
test-installation-npm (windows-2025)	1m 42s
test-installation-npm (ubuntu-24.04-arm)	17s
test-integration-rewatch (windows-2025)	2m 49s
test-installation-npm (macos-15-intel)	27s
test-installation-pnpm (windows-2025)	43s
publish	0s
	1h 0m 20s

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