[API] Change libvm_payload to shared lib

Test: MicrodroidTests
Bug: 243512047
Bug: 250854486
Change-Id: I20d0613d2118c43d891d1fbb60ee8ab070cbb8e0

compos/compos_key_helper/Android.bp

@@ -26,9 +26,9 @@ cc_binary {
 
     static_libs: [
         "libcompos_key",
-        "libvm_payload",
     ],
     shared_libs: [
+        "libvm_payload",
         "libbinder_ndk",
     ],
 }

microdroid/vm_payload/Android.bp

@@ -2,7 +2,7 @@ package {
     default_applicable_licenses: ["Android-Apache-2.0"],
 }
 
-rust_ffi_static {
+rust_ffi_shared {
     name: "libvm_payload",
     crate_name: "vm_payload",
     srcs: ["src/*.rs"],

tests/testapk/Android.bp

@@ -37,12 +37,12 @@ cc_library_shared {
         "libbinder_ndk",
         "libbinder_rpc_unstable",
         "MicrodroidTestNativeLibSub",
+        "libvm_payload",
     ],
     static_libs: [
         "libfsverity_digests_proto_cc",
         "liblog",
         "libprotobuf-cpp-lite-ndk",
-        "libvm_payload",
     ],
 }