Display a generic fallback component when initial config load fails (#8588)

Fixes: #8487 #5027 

1. Summary
The purpose of these changes is to elevate the dev/user experience when
the initial config load call fails for whatever reason by displaying a
fallback component.

2. Solution
I ended up making more changes than I initially planned. I had to update
the order of the contexts a bit because `GenericErrorFallback` is
dependent on `AppThemeProvider` for styling and `AppThemeProvider` is
dependent on `ObjectMetadataItemsProvider` for
[`useObjectMetadataItem`](https://github.com/khuddite/twenty/blob/ae2f193d68c6168e4c8323297d58f6dbc1de9fdf/packages/twenty-front/src/modules/object-metadata/hooks/useObjectMetadataItem.ts#L22)
hook (`AppThemeProvider` -> `useColorScheme` -> `useUpdateOneRecord` ->
`useObjectMetadataItem`). I had to create a wrapper component for
`AppThemeProvider` and stylize it in a way that it looks responsive on
both mobile and desktop devices. Finally, I had to introduce the
`isErrored` flag to differentiate the loading and error states.

    There are some improvements we can make later - 
    - Display a loading state for the initial config load
    - Implement a refetch logic for the initial config loading failure
    
3. Recording



https://github.com/user-attachments/assets/c2f43573-8006-4118-8e18-8576099d78fd



https://github.com/user-attachments/assets/9c5853d3-539b-4880-aa38-c416c3e13594

---------

Co-authored-by: Félix Malfait <felix@twenty.com>

packages/twenty-front/src/modules/client-config/states/clientConfigApiStatusState.ts

@@ -0,0 +1,12 @@
+import { createState } from 'twenty-ui';
+
+type ClientConfigApiStatus = {
+  isLoaded: boolean;
+  isErrored: boolean;
+  error?: Error;
+};
+
+export const clientConfigApiStatusState = createState<ClientConfigApiStatus>({
+  key: 'clientConfigApiStatus',
+  defaultValue: { isLoaded: false, isErrored: false, error: undefined },
+});

packages/twenty-front/src/modules/client-config/states/isClientConfigLoadedState.ts

@@ -1,6 +0,0 @@
-import { createState } from 'twenty-ui';
-
-export const isClientConfigLoadedState = createState<boolean>({
-  key: 'isClientConfigLoadedState',
-  defaultValue: false,
-});