[Bug] template extend + inbound is broken since 1.1.0

[shirok1]

Minimal reproducible config:

{
  "templates": [
    {
      "name": "a"
    },
    {
      "name": "b",
      "extend": "a",
      "inbounds": [
        {
          "type": "mixed",
          "tag": "a-tag"
        }
      ]
    }
  ]
}

❯ git checkout v1.1.0-alpha.1
Previous HEAD position was 4dd3530 documentation: Bump version
HEAD is now at dc0001a documentation: Bump version
❯ make build
go build -v -trimpath -ldflags "-X 'github.com/sagernet/serenity/constant.Version=1.1.0-alpha.1' -s -w -buildid=" ./cmd/serenity
github.com/sagernet/serenity/template
github.com/sagernet/serenity/server
github.com/sagernet/serenity/cmd/serenity
❯ ./serenity check
FATAL[0000] initialize template[b]: unmarshal extended template: a: inbounds[0]: missing Inbound fields registry in context
❯ git checkout v1.0.0-beta.20
Previous HEAD position was dc0001a documentation: Bump version
HEAD is now at fedd571 Add mips build
❯ make build
go build -v -trimpath -ldflags "-X 'github.com/sagernet/serenity/constant.Version=1.0.0-beta.20' -s -w -buildid=" ./cmd/serenity
❯ ./serenity check
❯

In d2f1118 context.Background() was changed to globalCtx with a commit message claiming "Update dependencies". Wonder if it was intentional.