Document new accept keyword for the media selector (#39692)

Co-authored-by: c0ffeeca7 <38767475+c0ffeeca7@users.noreply.github.com>

source/_docs/blueprint/selectors.markdown

@@ -155,7 +155,7 @@ device:
         When set, the list of areas is limited to areas with devices that have
         the set model ID.
       type: string
-      required: false      
+      required: false
 entity:
   description: >
     When entity options are provided, the list of areas is filtered by areas
@@ -571,7 +571,7 @@ filter:
       description: >
         When set, the list of devices is limited to devices that have the set model ID.
       type: string
-      required: false      
+      required: false
 multiple:
   description: >
     Allows selecting multiple devices. If set to `true`, the resulting value of
@@ -608,7 +608,7 @@ device:
   filter:
     - integration: deconz
       manufacturer: Philips
-      model: RWL021  
+      model: RWL021
   entity:
     - domain: sensor
       device_class: battery
@@ -635,7 +635,7 @@ enable_millisecond:
   description: When `true`, the duration selector will allow selecting milliseconds.
   type: boolean
   default: false
-  required: false  
+  required: false
 {% endconfiguration %}
 
 The output of this selector is a mapping of the time values the user selected.
@@ -757,7 +757,7 @@ entity:
 
 ## Floor selector
 
-The floor selector shows a floor finder that can pick 
+The floor selector shows a floor finder that can pick
 floors based on the selector configuration. The value of the input will be the
 floor ID. If `multiple` is set to `true`, the value is a list of floor IDs.
 
@@ -808,7 +808,7 @@ device:
         When set, the list only includes floors with devices that have
         the set model ID.
       type: string
-      required: false      
+      required: false
 entity:
   description: >
     When entity options are provided, the list only includes floors
@@ -1025,8 +1025,7 @@ The media selector is a powerful selector that allows a user to easily select
 media to play on a media device. Media can be a lot of things, for example,
 cameras, local media, text-to-speech, Home Assistant Dashboards, and many more.
 
-The user selects the device to play media on, and automatically limits the
-selectable media suitable for the selected device.
+You are prompted to select the device used to play media. Once the device is selected, the media selector only shows media that is suitable for this device.
 
 ![Screenshot of the Media selector](/images/blueprints/selector-media.png)
 
@@ -1034,6 +1033,13 @@ selectable media suitable for the selected device.
 media:
 ```
 
+```yaml
+# Do not ask for a device but manually specify a filter for the media.
+media:
+  accept:
+    - image/*
+```
+
 The output of the media selector, is an mapping with information about
 the selected media device and the selected media to play. There is also
 metadata, which is used by the frontend and should not be used in the
@@ -1059,6 +1065,25 @@ metadata:
         media-source://tts/cloud?message=TTS+Message&language=en-US&gender=female
 ```
 
+Example output if accept filter is used. Note that the `entity_id` is not present:
+
+```yaml
+media_content_id: media-source://tts/cloud?message=TTS+Message&language=en-US&gender=female
+media_content_type: provider
+metadata:
+  title: TTS Message
+  thumbnail: https://brands.home-assistant.io/_/cloud/logo.png
+  media_class: app
+  children_media_class: null
+  navigateIds:
+    - {}
+    - media_content_type: app
+      media_content_id: media-source://tts
+    - media_content_type: provider
+      media_content_id: >-
+        media-source://tts/cloud?message=TTS+Message&language=en-US&gender=female
+```
+
 ## Number selector
 
 The number selector shows either a number input or a slider input, that allows
@@ -1445,7 +1470,7 @@ device:
     model_id:
       description: When set, the targets are limited to devices that have the set model ID.
       type: string
-      required: false      
+      required: false
 entity:
   description: >
     When entity options are provided, the targets are limited by entities