⚡ 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/mint.json

@@ -142,7 +142,7 @@
     },
     {
       "group": "Settings",
-      "pages": ["settings/overview"]
+      "pages": ["settings/overview", "settings/remember-user"]
     },
     {
       "group": "Deploy",

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
 

apps/docs/settings/remember-user.mdx

@@ -0,0 +1,13 @@
+---
+title: Remember user
+icon: bookmark
+---
+
+Head over to the `Settings` tab of your typebot, under the `General` section you can find the `Remember user` setting.
+
+This setting allows you to save the chat session state into the user's web browser storage. It means that if he answers a question and then closes the chat, the next time he opens it, the chat will be in the same state as it was before.
+
+There are 2 storage options:
+
+- **Local storage**: The chat state will be saved in the user's web browser. It will be available only on the same device and web browser.
+- **Session storage**: The chat state will be saved in the user's web browser. It will be available only on the same device and web browser, but it will be deleted when the user closes the current tab or the web browser.