Fix language picker base URL #2714

Job	Run time
python-lint	7s
clang-format	12s
ubuntu-clang-build (ubuntu-24.04)	1m 24s
ubuntu-clang-build (ubuntu-24.04-arm)	1m 37s
ubuntu-gcc-build (ubuntu-24.04-arm)	2m 37s
ubuntu-gcc-build (ubuntu-24.04)	1m 11s
macos-clang-build	1m 39s
windows-msvc-build	3m 31s
windows-clang-build	3m 53s
ubuntu-clang-test (ubuntu-24.04-arm)	5m 46s
ubuntu-clang-test (ubuntu-24.04)	4m 34s
ubuntu-clang-sanitizer-build (ubuntu-24.04)	1m 8s
macos-clang-test	3m 2s
ubuntu-gcc-test (ubuntu-24.04)	4m 18s
ubuntu-gcc-test (ubuntu-24.04-arm)	5m 20s
ubuntu-clang-sanitizer-test (ubuntu-24.04)	1m 59s
windows-msvc-test	2m 30s
windows-clang-test	1m 16s
macos-clang-test-extended	2m 4s
ubuntu-clang-sanitizer-test-extended (ubuntu-24.04)	2m 30s
windows-clang-test-extended	1m 30s
windows-msvc-test-extended	1m 27s
ubuntu-clang-test-extended (ubuntu-24.04)	2m 44s
ubuntu-clang-test-extended (ubuntu-24.04-arm)	3m 27s
ubuntu-gcc-test-extended (ubuntu-24.04-arm)	3m 34s
ubuntu-gcc-test-extended (ubuntu-24.04)	2m 25s
ubuntu-gcc-build-codecov	3m 38s
ubuntu-gcc-build-perf-stats	1m 4s
	1h 10m 27s

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