Newest version broke env in templates

[lespea]

Describe the bug
After installing the 2024.12.13 I'm getting the following error every time my prompt is rendered:

mise WARN  error deserializing __MISE_SESSION: missing field `env`
mise ERROR failed to parse template: '{{env.HOME}}/.cache/global_venv'
mise ERROR Failed to render '__tera_one_off'
mise ERROR Variable `env.HOME` not found in context while rendering '__tera_one_off'
mise ERROR Run with --verbose or MISE_VERBOSE=1 for more information

I have the following setting in my config:

[env]
_.python.venv = "{{env.HOME}}/.cache/global_venv"

To Reproduce
Add entry into config, launch terminal.

Expected behavior
No errors; can use env in the templates

mise doctor output

version: 2024.12.13 linux-x64 (2024-12-17)
activated: yes
shims_on_path: no

build_info:
  Target: x86_64-unknown-linux-gnu
  Features: DEFAULT, NATIVE_TLS
  Built: Tue, 17 Dec 2024 23:49:20 +0000
  Rust Version: rustc 1.83.0 (90b35a623 2024-11-26)
  Profile: release

shell:
  /usr/bin/fish
  fish, version 3.7.1

dirs:
  cache: ~/.cache/mise
  config: ~/.config/mise
  data: ~/.local/share/mise
  shims: ~/.local/share/mise/shims
  state: ~/.local/state/mise

config_files:
  ~/.config/mise/config.toml

backends:
  aqua
  asdf
  cargo
  core
  gem
  go
  npm
  pipx
  spm
  ubi
  vfox

plugins:
  coursier  ssh://git@github.com/jiahuili430/asdf-coursier.git#b8ee13d
  gradle    ssh://git@github.com/rfrancis/asdf-gradle.git#3af5633
  grails    ssh://git@github.com/weibemoura/asdf-grails.git#ba222b0
  kotlin    ssh://git@github.com/asdf-community/asdf-kotlin.git#a9f0dde
  perl      ssh://git@github.com/ouest/asdf-perl.git#2b4609b
  pnpm      ssh://git@github.com/jonathanmorley/asdf-pnpm.git#85221d3
  sbt       ssh://git@github.com/bram2000/asdf-sbt.git#33f9637
  scala     ssh://git@github.com/asdf-community/asdf-scala.git#0533444

toolset:
  asdf:coursier@2.1.18
  asdf:gradle@8.11.1
  asdf:kotlin@2.1.0
  asdf:pnpm@9.15.0
  asdf:sbt@1.10.6
  asdf:scala@3.6.2
  core:bun@1.1.38
  core:go@1.23.4
  core:java@temurin-21.0.5+11.0.LTS
  core:java@temurin-23.0.1+11
  core:node@23.4.0
  core:python@3.13.1
  core:zig@0.13.0
  go:filippo.io/age/cmd/age-keygen@1.2.0
  go:filippo.io/age/cmd/age@1.2.0
  go:github.com/Zxilly/go-size-analyzer/cmd/gsa@1.7.6
  go:github.com/charmbracelet/gum@0.14.5
  go:github.com/dmarkham/enumer@1.5.10
  go:github.com/go-swagger/go-swagger/cmd/swagger@0.31.0
  go:github.com/golang/mock/mockgen@1.6.0
  go:github.com/golangci/golangci-lint/cmd/golangci-lint@1.62.2
  go:github.com/icholy/gomajor@0.14.0
  go:github.com/itchyny/gojq/cmd/gojq@0.12.17
  go:github.com/johnkerl/miller/v6/cmd/mlr@6.13.0
  go:github.com/marwan-at-work/mod/cmd/mod@0.7.1
  go:github.com/mr-karan/doggo/cmd/doggo@1.0.5
  go:github.com/muesli/duf@0.8.1
  go:github.com/noperator/jqfmt/cmd/jqfmt@latest
  go:github.com/noperator/sol/cmd/sol@latest
  go:github.com/oligot/go-mod-upgrade@0.10.0
  go:github.com/psampaz/go-mod-outdated@0.9.0
  go:github.com/segmentio/golines@0.12.2
  go:golang.org/x/tools/cmd/stringer@0.28.0
  go:golang.org/x/tools/gopls@0.17.0
  go:honnef.co/go/tools/cmd/staticcheck@0.6.0-0.dev
  go:mvdan.cc/gofumpt@0.7.0

Additional context
I launch a bash process and activated mise and it had the same error so I don't think it's fish only.