refactor: reduce bundle size (backport #2719)

[mergify]

What changed?

1. Removed files / packages

• Iconify and its dependencies
• echarts
• pluralize
• unplugin
• vue-echarts
• lodash
• lucide-static

2. Lazy Import styles in "EmailContent" component.
3. Fix placeholder for fields.
4. Lazy load a lot of heavy components.
5. Properly Import components from 'frappe-ui', dont use nested imports.
6. Incorporate new changes of frappe-ui tree shaking structure
7. Reduces bundle size by almost 3.5 Times
   Local: 2500 Kbs => 800KBs
   Prod: 800 KBs => 230KBs

depends-on: frappe/frappe-ui#445

---

This is an automatic backport of pull request #2719 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of 01175b0 has failed:

On branch mergify/bp/main-hotfix/pr-2719
Your branch is up to date with 'origin/main-hotfix'.

You are currently cherry-picking commit 01175b0f.
  (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:   desk/auto-imports.d.ts
	deleted:    desk/lucide.ts
	modified:   desk/package.json
	modified:   desk/src/components/CommunicationArea.vue
	modified:   desk/src/components/EmailContent.vue
	modified:   desk/src/components/ListViewBuilder.vue
	modified:   desk/src/components/SearchArticles.vue
	modified:   desk/src/components/SearchPopover.vue
	modified:   desk/src/components/Settings/NewTeamModal.vue
	modified:   desk/src/components/SidebarLink.vue
	modified:   desk/src/components/TextEditor.vue
	modified:   desk/src/components/UniInput.vue
	modified:   desk/src/components/ViewBreadcrumbs.vue
	modified:   desk/src/components/desk/global/NewContactDialog.vue
	modified:   desk/src/components/ticket/TicketAgentActivities.vue
	modified:   desk/src/composables/useView.ts
	modified:   desk/src/pages/desk/contact/Contacts.vue
	modified:   desk/src/pages/desk/customer/Customers.vue
	modified:   desk/src/pages/knowledge-base/KnowledgeBaseAgent.vue
	modified:   desk/src/pages/ticket/TicketCommunication.vue
	modified:   desk/src/pages/ticket/TicketConversation.vue
	modified:   desk/src/pages/ticket/TicketCustomer.vue
	modified:   desk/src/pages/ticket/TicketNew.vue
	modified:   desk/src/pages/ticket/TicketTextEditor.vue
	modified:   desk/src/pages/ticket/Tickets.vue
	modified:   desk/tsconfig.json
	modified:   desk/vite.config.js
	modified:   yarn.lock

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   desk/src/components/ticket-agent/TicketActivityPanel.vue

Cherry-pick of c9a6a28 has failed:

On branch mergify/bp/main-hotfix/pr-2719
Your branch is ahead of 'origin/main-hotfix' by 6 commits.
  (use "git push" to publish your local commits)

You are currently cherry-picking commit c9a6a28a.
  (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:   desk/src/pages/dashboard/Dashboard.vue
	modified:   desk/tailwind.config.js

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   desk/src/components/ticket-agent/TicketSLA.vue

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