fix(runtime-dom): inconsistent behaviour on nested transition groups

[daniser]

fixes #1531
close #5385

[skirtles-code]

For anyone trying to review this, here's the original reproduction, converted to a Playground:

• Playground - main

Here's the same example but running on this PR:

• Playground - this PR

[skirtles-code]

Would you be able to merge in main, to resolve the conflicts and get the latest ESLint rules?

[daniser]

@skirtles-code Done!

[github-actions]

Size Report

Bundles

File	Size	Gzip	Brotli
runtime-dom.global.prod.js	100 kB (+146 B)	38 kB (+45 B)	34.2 kB (+17 B)
vue.global.prod.js	159 kB (+146 B)	57.9 kB (+38 B)	51.5 kB (+22 B)

Usages

Name	Size	Gzip	Brotli
createApp (CAPI only)	46.9 kB	18.3 kB	16.7 kB
createApp	55 kB	21.3 kB	19.4 kB
createSSRApp	59 kB	23 kB	21 kB
defineCustomElement	59.8 kB	22.8 kB	20.8 kB
overall	68.7 kB	26.3 kB	24 kB

[edison1105]

/ecosystem-ci run

[pkg-pr-new]

Open in Stackblitz

@vue/compiler-core

pnpm add https://pkg.pr.new/@vue/compiler-core@8803

@vue/compiler-dom

pnpm add https://pkg.pr.new/@vue/compiler-dom@8803

@vue/compiler-ssr

pnpm add https://pkg.pr.new/@vue/compiler-ssr@8803

@vue/compiler-sfc

pnpm add https://pkg.pr.new/@vue/compiler-sfc@8803

@vue/reactivity

pnpm add https://pkg.pr.new/@vue/reactivity@8803

@vue/runtime-core

pnpm add https://pkg.pr.new/@vue/runtime-core@8803

@vue/runtime-dom

pnpm add https://pkg.pr.new/@vue/runtime-dom@8803

@vue/server-renderer

pnpm add https://pkg.pr.new/@vue/server-renderer@8803

@vue/shared

pnpm add https://pkg.pr.new/@vue/shared@8803

vue

pnpm add https://pkg.pr.new/vue@8803

@vue/compat

pnpm add https://pkg.pr.new/@vue/compat@8803

commit: 29a1647

[vue-bot]

📝 Ran ecosystem CI: Open

suite	result	latest scheduled
language-tools	❌ failure	❌ failure
nuxt	❌ failure	✅ success
pinia	✅ success	✅ success
primevue	✅ success	✅ success
quasar	✅ success	✅ success
radix-vue	✅ success	✅ success
router	✅ success	✅ success
test-utils	✅ success	✅ success
vant	✅ success	✅ success
vite-plugin-vue	✅ success	✅ success
vitepress	✅ success	✅ success
vue-i18n	✅ success	✅ success
vue-macros	✅ success	✅ success
vuetify	✅ success	✅ success
vueuse	✅ success	✅ success
vue-simple-compiler	✅ success	✅ success

[daniser]

Any estimate on when it'll be merged? It's been over a year.

[edison1105]

/ecosystem-ci run

[vue-bot]

📝 Ran ecosystem CI: Open

suite	result	latest scheduled
language-tools	✅ success	✅ success
nuxt	✅ success	✅ success
pinia	✅ success	✅ success
primevue	✅ success	✅ success
quasar	✅ success	✅ success
radix-vue	✅ success	✅ success
router	✅ success	✅ success
test-utils	✅ success	✅ success
vant	✅ success	✅ success
vite-plugin-vue	❌ failure	❌ failure
vitepress	✅ success	✅ success
vue-i18n	✅ success	✅ success
vue-macros	✅ success	✅ success
vuetify	✅ success	✅ success
vueuse	✅ success	✅ success
vue-simple-compiler	✅ success	✅ success

[edison1105]

/ecosystem-ci run vite-plugin-vue

[vue-bot]

📝 Ran ecosystem CI: Open

suite	result	latest scheduled
vite-plugin-vue	✅ success	❌ failure