Set the extract dir for AndroidBuild instances to the corresponding instance directory

This allows creating the `AndroidBuild` instances early and later having
them know where to extract files to.

Bug: b/472421213

Author: Databean

base/cvd/cuttlefish/host/commands/assemble_cvd/BUILD.bazel

@@ -60,6 +60,7 @@ cf_cc_binary(
         "//cuttlefish/host/libs/config:ap_boot_flow",
         "//cuttlefish/host/libs/config:config_flag",
         "//cuttlefish/host/libs/config:custom_actions",
+        "//cuttlefish/host/libs/config:cuttlefish_config",
         "//cuttlefish/host/libs/config:fetcher_config",
         "//cuttlefish/host/libs/config:fetcher_configs",
         "//cuttlefish/host/libs/config/adb",

base/cvd/cuttlefish/host/commands/assemble_cvd/assemble_cvd.cc

@@ -64,6 +64,7 @@
 #include "cuttlefish/host/libs/config/adb/adb.h"
 #include "cuttlefish/host/libs/config/config_flag.h"
 #include "cuttlefish/host/libs/config/custom_actions.h"
+#include "cuttlefish/host/libs/config/cuttlefish_config.h"
 #include "cuttlefish/host/libs/config/defaults/defaults.h"
 #include "cuttlefish/host/libs/config/fastboot/fastboot.h"
 #include "cuttlefish/host/libs/config/fetcher_configs.h"
@@ -410,6 +411,13 @@ Result<const CuttlefishConfig*> InitFilesystemAndCreateConfig(
       CF_EXPECT(EnsureDirectoryExists(dir, default_mode, default_group));
     }
 
+    for (size_t index = 0; index < android_builds.Size(); index++) {
+      const CuttlefishConfig::InstanceSpecific& instance =
+          const_cast<const CuttlefishConfig&>(config).ForInstance(index);
+      AndroidBuild& build = android_builds.ForIndex(index);
+      CF_EXPECT(build.SetExtractDir(instance.instance_dir()));
+    }
+
     if (!snapshot_path.empty()) {
       SharedFD temp = SharedFD::Creat(config.AssemblyPath("restore"), 0660);
       if (!temp->IsOpen()) {