Fix snappy windows getdeps build failure by disabling benchmarks

Summary:
The snappy getdeps build was failing with CMake error about missing third_party/benchmark directory. This occurred after the snappy version was bumped from 1.1.7 to commit 1.2.2 in D104478389.

Root Cause:
The newer snappy version includes a third_party/benchmark git submodule (google/benchmark). When downloading from GitHub as a tarball, git submodules are not included, leaving the directory empty. The snappy CMakeLists.txt unconditionally tries to add this subdirectory at line 414, causing the build to fail.

Fix:
Add SNAPPY_BUILD_BENCHMARKS = OFF to the cmake.defines section in the snappy manifest. This prevents CMake from trying to add the missing benchmark subdirectory, similar to how SNAPPY_BUILD_TESTS = OFF is already used.

Reviewed By: sandarsh

Differential Revision: D105247037

fbshipit-source-id: a1a290f1fb13a1f7545aa43be673b0206435ec43

Author: jbeshay

build/fbcode_builder/manifests/snappy

@@ -23,6 +23,7 @@ subdir = snappy-27ab5f7f518430a021239bc26a5b2fd64affbc7b
 
 [cmake.defines]
 SNAPPY_BUILD_TESTS = OFF
+SNAPPY_BUILD_BENCHMARKS = OFF
 
 # Avoid problems like `relocation R_X86_64_PC32 against symbol` on ELF systems
 # when linking rocksdb, which builds PIC even when building a static lib