⚡ Restore chat state when user is remembered (#1333)

Closes #993

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **New Features**
- Added a detailed explanation page for the "Remember user" setting in
the app documentation.
- Introduced persistence of chat state across sessions, with options for
local or session storage.
- Enhanced bot functionality to store and retrieve initial chat replies
and manage bot open state with improved storage handling.
- Added a new callback for chat state persistence to bot component
props.

- **Improvements**
- Updated the general settings form to clarify the description of the
"Remember user" feature.
- Enhanced custom CSS handling and progress value persistence in bot
components.
- Added conditional transition disabling in various components for
smoother user experiences.
- Simplified the handling of `onTransitionEnd` across multiple bubble
components.

- **Refactor**
- Renamed `inputIndex` to `chunkIndex` or `index` in various components
for consistency.
	- Removed unused ESLint disable comments related to reactivity rules.
	- Adjusted import statements and cleaned up code across several files.

- **Bug Fixes**
- Fixed potential issues with undefined callbacks by introducing
optional chaining in component props.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

apps/docs/settings/overview.mdx

@@ -14,7 +14,7 @@ The general settings represent the general behaviors of your typebot.
 
 - **Prefill input**: If enabled, the inputs will be automatically pre-filled whenever their associated variable has a value.
 - **Hide query params on bot start**: If enabled, the query params will be hidden when the bot starts.
-- **Remember user**: If enabled, user previous variables will be prefilled and his new answers will override the previous ones.
+- [**Remember user**](./remember-user)
 
 ## Typing emulation