build: update to TypeScript 5.9 beta #6823

Job	Run time
lint	2m 17s
build	2m 9s
analyze	4s
test	5m 36s
e2e-windows-subset	13m 17s
e2e-package-managers (ubuntu-latest, 22, pnpm, 2)	5m 9s
e2e-package-managers (ubuntu-latest, 22, yarn, 2)	6m 5s
e2e-package-managers (ubuntu-latest, 22, yarn, 1)	5m 22s
e2e-package-managers (ubuntu-latest, 22, yarn, 0)	7m 47s
e2e (ubuntu-latest, 22, npm, 1)	11m 21s
e2e (ubuntu-latest, 22, npm, 5)	9m 41s
e2e-package-managers (ubuntu-latest, 22, pnpm, 0)	6m 2s
e2e (ubuntu-latest, 22, esbuild, 1)	9m 9s
e2e (ubuntu-latest, 22, npm, 4)	7m 38s
e2e (ubuntu-latest, 22, esbuild, 2)	9m 33s
e2e-package-managers (ubuntu-latest, 22, pnpm, 1)	4m 26s
e2e (ubuntu-latest, 22, npm, 2)	10m 53s
e2e (ubuntu-latest, 22, esbuild, 0)	7m 16s
e2e (ubuntu-latest, 22, esbuild, 4)	7m 5s
e2e (ubuntu-latest, 22, npm, 3)	9m 26s
e2e (ubuntu-latest, 22, npm, 0)	10m 16s
e2e (ubuntu-latest, 22, esbuild, 3)	8m 25s
e2e (ubuntu-latest, 22, esbuild, 5)	6m 9s
e2e-snapshots	-1s
	2h 45m 5s

Provide feedback