Remove Flashlight exception docs and nav entries

Deleted documentation files for Flashlight exception classes and removed their references from the mkdocs navigation and the index page. This streamlines the documentation by eliminating detailed exception class pages for Flashlight.

Author: FeodorFitsner

sdk/python/packages/flet/docs/flashlight/exceptions/flashlight_disable_exception.md

@@ -40,8 +40,3 @@ pip install flet-flashlight  # (1)!
 ## Description
 
 {{ class_all_options(class_name) }}
-
-See also:
-- [`FlashlightException`](exceptions/flashlight_exception.md)
-- [`FlashlightEnableException`](exceptions/flashlight_enable_exception.md)
-- [`FlashlightDisableException`](exceptions/flashlight_disable_exception.md)

sdk/python/packages/flet/docs/flashlight/exceptions/flashlight_disable_existent_user_exception.md

@@ -593,14 +593,6 @@ nav:
               - FilePickerUploadFile: types/filepickeruploadfile.md
               - Finder: types/finder.md
               - FletTestApp: types/flettestapp.md
-              - Flashlight:
-                  - FlashlightException: flashlight/exceptions/flashlight_exception.md
-                  - FlashlightEnableException: flashlight/exceptions/flashlight_enable_exception.md
-                  - FlashlightEnableNotAvailableException: flashlight/exceptions/flashlight_enable_not_available_exception.md
-                  - FlashlightEnableExistentUserException: flashlight/exceptions/flashlight_enable_existent_user_exception.md
-                  - FlashlightDisableException: flashlight/exceptions/flashlight_disable_exception.md
-                  - FlashlightDisableNotAvailableException: flashlight/exceptions/flashlight_disable_not_available_exception.md
-                  - FlashlightDisableExistentUserException: flashlight/exceptions/flashlight_disable_existent_user_exception.md
               - Geolocator:
                   - ForegroundNotificationConfiguration: geolocator/types/foreground_notification_configuration.md
                   - GeolocatorAndroidConfiguration: geolocator/types/geolocator_android_configuration.md