Request individual seasons from Jellyseerr (#1060)

## Description
Adds a dialog to select individual seasons for a TV show when requesting
it via Discover/Jellyseerr

If a request is already pending, it can be updated. If there's more than
7 seasons, a second submit button is added at the bottom of the dialog
for easier access.

Also, adds a button from Jellyfin series details to its Discover
equivalent and added a request button for partially available series to
request more seasons.

### Related issues
Closes #961

### Testing
Emulator & Jellyseerr 2.7.3

## Screenshots
![discover_seasons
Large](https://github.com/user-attachments/assets/c7781bf4-7c1b-4e4e-a0b8-a572111a8497)

## AI or LLM usage
None

app/src/main/java/com/github/damontecres/wholphin/data/model/DiscoverItem.kt

@@ -2,6 +2,7 @@
 
 package com.github.damontecres.wholphin.data.model
 
+import androidx.compose.runtime.Stable
 import com.github.damontecres.wholphin.api.seerr.model.CreditCast
 import com.github.damontecres.wholphin.api.seerr.model.CreditCrew
 import com.github.damontecres.wholphin.api.seerr.model.MovieDetails
@@ -74,6 +75,7 @@ enum class SeerrAvailability(
 /**
  * An item provided by a discovery service (ie Seerr). It may exist on the JF server as well.
  */
+@Stable
 @Serializable
 data class DiscoverItem(
     val id: Int,