disable rust ldt by default

PiperOrigin-RevId: 546127141

.github/workflows/validate.yaml

@@ -36,7 +36,7 @@ jobs:
     - name: Build Connections
       run: CC=clang CXX=clang++ bazel build --check_visibility=false //connections:core --spawn_strategy=standalone
     - name: Build Presence
-      run: CC=clang CXX=clang++ bazel build --check_visibility=false //presence --spawn_strategy=standalone --//presence/implementation:enable_rust_ldt=False
+      run: CC=clang CXX=clang++ bazel build --check_visibility=false //presence --spawn_strategy=standalone
 
   build-rust-linux:
     name: Build Rust on Linux

presence/implementation/BUILD

@@ -21,7 +21,7 @@ licenses(["notice"])
 # When not set, LDT encryption will not be available. We won't be able to advertise encrypted BLE4.2 advertisements nor scan for them.
 bool_flag(
     name = "enable_rust_ldt",
-    build_setting_default = True,
+    build_setting_default = False,
 )
 
 config_setting(