Remove legacy `-uncurried` flag and some leftovers #9365

Job	Run time
build-compiler (ubuntu-24.04, ocaml-variants.5.0.0+options,ocaml-option-static, linux-x64, x86_64...	2m 58s
build-compiler (ubuntu-24.04-arm, ocaml-variants.5.3.0+options,ocaml-option-static, true, true, t...	4m 22s
build-compiler (windows-2025, 5.3.0, true, win32-x64, x86_64-pc-windows-gnu, .exe)	5m 48s
test-devcontainer	13m 6s
build-compiler (macos-15-intel, 5.3.0, true, darwin-x64, x86_64-apple-darwin)	6m 3s
build-compiler (macos-15, 5.3.0, true, darwin-arm64, aarch64-apple-darwin)	5m 8s
build-compiler (ubuntu-24.04, ocaml-variants.5.3.0+options,ocaml-option-static, true, true, linux...	3m 5s
api-docs	1m 41s
pkg-pr-new	57s
test-installation-pnpm (ubuntu-24.04-arm)	27s
test-installation-pnpm (macos-15-intel)	31s
test-installation-pnpm (ubuntu-24.04)	13s
test-installation-npm (macos-15)	29s
test-integration-rewatch (macos-15)	2m 38s
test-installation-npm (windows-2025)	47s
test-installation-pnpm (windows-2025)	32s
test-integration-rewatch (macos-15-intel)	3m 45s
test-installation-npm (ubuntu-24.04-arm)	20s
test-integration-rewatch (ubuntu-24.04-arm)	1m 10s
test-integration-rewatch (ubuntu-24.04)	1m 18s
test-installation-npm (ubuntu-24.04)	14s
test-installation-npm (macos-15-intel)	27s
test-installation-pnpm (macos-15)	18s
test-integration-rewatch (windows-2025)	4m 12s
publish	0s
	1h 0m 29s

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