refactor!: remove react frontend + re-enable disabled integration tests (backport #4744)

[mergify]

ref: ignite/web#292
ref: #4414

---

This is an automatic backport of pull request #4744 done by Mergify.

[mergify]

Cherry-pick of d1bf508 has failed:

On branch mergify/bp/release/v28.x.y/pr-4744
Your branch is up to date with 'origin/release/v28.x.y'.

You are currently cherry-picking commit d1bf508a.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   changelog.md
	modified:   docs/docs/03-clients/03-vue.md
	modified:   ignite/cmd/scaffold_vue.go
	modified:   ignite/pkg/cosmosgen/generate_composables.go
	modified:   ignite/pkg/cosmosgen/templates/composable/index.ts.tpl
	modified:   ignite/pkg/cosmosgen/webtemplates.go
	modified:   ignite/templates/app/files/readme.md.plush
	deleted:    integration/cosmosgen/bank_module_test.ts
	modified:   integration/cosmosgen/cosmosgen_test.go
	deleted:    integration/cosmosgen/custom_module_test.ts
	modified:   integration/env.go
	modified:   integration/exec.go

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	deleted by them: docs/docs/03-clients/04-react.md
	both modified:   go.mod
	both modified:   go.sum
	both modified:   ignite/cmd/generate.go
	deleted by them: ignite/cmd/generate_hooks.go
	both modified:   ignite/cmd/scaffold_react.go
	both modified:   ignite/config/chain/base/config.go
	both modified:   ignite/config/chain/config.go
	both modified:   ignite/pkg/cosmosgen/cosmosgen.go
	both modified:   ignite/services/chain/generate.go
	both modified:   ignite/services/scaffolder/scaffolder.go
	both modified:   integration/app.go
	deleted by them: integration/client.go
	deleted by them: integration/cosmosgen/bank_module_test.go
	both modified:   integration/cosmosgen/cosmosgen_composables_test.go
	deleted by them: integration/cosmosgen/cosmosgen_hooks_test.go
	deleted by them: integration/cosmosgen/custom_module_test.go

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[github-actions]

Visit the preview URL for this PR (updated for commit 17f9da4):

https://igntservices-docs--pr4756-mergify-bp-release-v-hp7f01fn.web.app

_{(expires Wed, 16 Jul 2025 08:43:16 GMT)}

_{🔥 via Firebase Hosting GitHub Action 🌎}

_{Sign: 95379efd94dd497aaa37c2d0354e6e2cafca5ec5}