build: update to TypeScript 5.9 RC #1744

Job	Run time
lint	2m 20s
build	18s
e2e_windows (windows-2025, 22, npm, 0)	22s
e2e_windows (windows-2025, 22, npm, 1)	26s
e2e_windows (windows-2025, 22, npm, 4)	25s
e2e_windows (windows-2025, 22, npm, 3)	21s
e2e_windows (windows-2025, 22, npm, 2)	30s
e2e_windows (windows-2025, 22, esbuild, 1)	24s
e2e_windows (windows-2025, 22, npm, 5)	30s
e2e_windows (windows-2025, 22, esbuild, 3)	31s
e2e_windows (windows-2025, 22, esbuild, 5)	43s
e2e_windows (windows-2025, 22, esbuild, 0)	26s
e2e_windows (windows-2025, 22, esbuild, 2)	26s
e2e_windows (windows-2025, 22, esbuild, 4)	30s
Browser Compatibility Tests	0s
publish-snapshots	0s
test	0s
e2e	0s
e2e-package-managers	0s
e2e-snapshots	0s
	8m 12s

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