gitweb: shorten index hashes with trailing file modes #29145

Job	Run time
config	6s
fuzz smoke test	1m 14s
win build	5m 11s
win+Meson build	4m 8s
sparse	3m 37s
static-analysis	6m 11s
documentation	7m 1s
osx-reftable (macos-14)	19m 15s
osx-meson (macos-14)	21m 41s
osx-clang (macos-14)	19m 57s
osx-gcc (macos-14)	18m 53s
rust-analysis	1m 50s
linux-breaking-changes (ubuntu:rolling)	13m 25s
fedora-breaking-changes-meson (fedora:latest)	10m 11s
linux-reftable (ubuntu:rolling)	13m 59s
linux-reftable-leaks (ubuntu:rolling)	43m 2s
linux-TEST-vars (ubuntu:20.04)	13m 19s
linux-musl-meson (alpine:latest)	8m 4s
linux-sha256 (ubuntu:rolling)	13m 20s
linux-meson (ubuntu:rolling)	14m 19s
almalinux-8 (almalinux:8)	8m 43s
linux-leaks (ubuntu:rolling)	41m 57s
linux-asan-ubsan (ubuntu:rolling)	48m 26s
debian-11 (debian:11)	10m 37s
linux32 (i386/ubuntu:20.04)	10m 17s
win+VS build	-1s
win+VS test	-1s
win test (1)	4m 17s
win test (2)	7m 42s
win test (8)	6m 54s
win test (0)	7m 3s
win test (7)	7m 22s
win test (3)	9m 48s
win test (9)	4m 16s
win test (6)	8m 29s
win test (4)	10m 36s
win test (5)	9m 27s
win+Meson test (6)	13m 41s
win+Meson test (1)	6m 9s
win+Meson test (0)	8m 17s
win+Meson test (2)	10m 6s
win+Meson test (5)	7m 26s
win+Meson test (9)	6m 33s
win+Meson test (3)	10m 25s
win+Meson test (4)	9m 43s
win+Meson test (7)	6m 32s
win+Meson test (8)	10m 38s
	8h 44m 5s

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