std.fs.Dir: fix updateFile() to flush the file before updating its times
AtomicFile.finish() calls flush() which renders any previous updateTimes() calls
useless. Regression introduced in f2a3ac7c0534a74ee544fdf6ef9d2176a8d62389.
Closes #24927.
77c09d16f9Alex Rønne Petersen committed on 8/23/2025, 7:32:14 PM· committed by Andrew Kelleyparent47a2f2d