build: Keep non-bazel builds on zlib for now

Fails locally with:

rust-lld: error: --compress-debug-sections: LLVM was not built with LLVM_ENABLE_ZSTD or did not find zstd at build time

Follow-up to MaterializeInc#30496

Author: def-

Diff for: .cargo/config.toml

@@ -13,7 +13,7 @@
 # Sync: This target-cpu and list of features should be kept in sync with the ones in ci-builder and
 # xcompile.
 rustflags = [
-    "-Clink-arg=-Wl,--compress-debug-sections=zstd",
+    "-Clink-arg=-Wl,--compress-debug-sections=zlib",
     "-Clink-arg=-Wl,-O3",
     "-Clink-arg=-fuse-ld=lld",
     "-Csymbol-mangling-version=v0",
@@ -30,7 +30,7 @@ rustflags = [
 # xcompile.
 [target."aarch64-unknown-linux-gnu"]
 rustflags = [
-    "-Clink-arg=-Wl,--compress-debug-sections=zstd",
+    "-Clink-arg=-Wl,--compress-debug-sections=zlib",
     "-Clink-arg=-Wl,-O3",
     "-Clink-arg=-fuse-ld=lld",
     "-Csymbol-mangling-version=v0",

Diff for: ci/builder/Dockerfile

@@ -303,7 +303,7 @@ ENV CC=$ARCH_GCC-unknown-linux-gnu-cc
 ENV CXX=$ARCH_GCC-unknown-linux-gnu-c++
 ENV CXXSTDLIB=static=stdc++
 ENV LDFLAGS="-fuse-ld=lld -static-libstdc++"
-ENV RUSTFLAGS="-Clink-arg=-Wl,--compress-debug-sections=zstd -Clink-arg=-Wl,-O3 -Clink-arg=-fuse-ld=lld -L/opt/x-tools/$ARCH_GCC-unknown-linux-gnu/$ARCH_GCC-unknown-linux-gnu/sysroot/lib/ -Csymbol-mangling-version=v0 --cfg=tokio_unstable"
+ENV RUSTFLAGS="-Clink-arg=-Wl,--compress-debug-sections=zlib -Clink-arg=-Wl,-O3 -Clink-arg=-fuse-ld=lld -L/opt/x-tools/$ARCH_GCC-unknown-linux-gnu/$ARCH_GCC-unknown-linux-gnu/sysroot/lib/ -Csymbol-mangling-version=v0 --cfg=tokio_unstable"
 ENV TARGET_AR=$AR
 ENV TARGET_CC=$CC
 ENV TARGET_CXX=$CXX

Diff for: misc/python/materialize/xcompile.py

@@ -150,7 +150,7 @@ def cargo(
     }
 
     rustflags += [
-        "-Clink-arg=-Wl,--compress-debug-sections=zstd",
+        "-Clink-arg=-Wl,--compress-debug-sections=zlib",
         "-Clink-arg=-Wl,-O3",
         "-Csymbol-mangling-version=v0",
         "--cfg=tokio_unstable",