fix(compile): bump libsui to 0.16.1 to survive eu-strip in flatpak

[littledivy]

Fixes #35633

Problem

Standalone binaries produced by deno compile segfault (exit 139) after eu-strip runs over them — which flatpak-builder does automatically during a flatpak build. Regression in Deno 2.9, bisected to the libsui 0.16.0 bump (#35467).

Root cause

libsui's in-place Elf::append (new in 0.16.0) relocates the program header table past the original EOF, into the file gap just before the appended note. eu-strip (elfutils, as run by flatpak-builder) lays the stripped output out itself with ELF_F_LAYOUT and zero-fills every file gap that falls between two allocated sections. With only a note-sized .note.sui section past that gap, eu-strip treats the relocated program header table as dead space and zeroes it → all-NULL program headers → segfault on exec.

Fix

libsui 0.16.1 (denoland/sui#75) covers the relocated program header table with a dedicated allocated .sui.phdrs section so section-based strip tools preserve it. This bumps the dependency and adds a spec test that eu-strips a compiled binary and asserts it still runs (skips gracefully where eu-strip isn't installed).

Verification

Reproduced and fixed against the exact flatpak toolchain (elfutils 0.193, built from source) on Linux x86_64:

• real deno 2.9.0 compiled binary + eu-strip 0.193 (flatpak flags) → segfault 139; with 0.16.1 → runs
• every binary shape (PIE+RELR, plain PIE, non-PIE, large .bss, section-header-stripped, fully stripped) × eu-strip 0.193 & 0.190 → runs, program headers intact
• payload sizes 1 B – 1 MB → payload still recoverable after strip
• real denort 2.9.0 base → program headers intact after strip
• binutils strip note-survival preserved (unchanged from 0.16.0)