Updated Unreal options with defaults (#15233)

## DESCRIBE YOUR PR
Making sure the metadata is up to date for Unreal options since
migrating in full to SDKoption.

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## PRE-MERGE CHECKLIST

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- [ ] Checked Vercel preview for correctness, including links
- [ ] PR was reviewed and approved by any necessary SMEs (subject matter
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---------

Co-authored-by: Shannon Anahata <[email protected]>

Author: sfanahata

docs/platforms/unreal/configuration/options.mdx

@@ -64,15 +64,25 @@ This variable controls the total amount of breadcrumbs that should be captured.
 
 </SdkOption>
 
-<SdkOption name="AutomaticBreadcrumbs" type="bool">
+<SdkOption name="AutomaticBreadcrumbs" type="struct" defaultNote="all fields default to false">
 
-Configures whether to automatically add breadcrumbs on in-game events (i.e. when a game map is loaded or session ID is changed).
+Configures whether to automatically add breadcrumbs for specific in-game events. This is a struct containing boolean fields for different event types:
+- `bOnMapLoadingStarted` - when map loading starts
+- `bOnMapLoaded` - when map is loaded
+- `bOnGameStateClassChanged` - when game state changes
+- `bOnGameSessionIDChanged` - when game session ID changes
+- `bOnUserActivityStringChanged` - when user activity string changes
 
 </SdkOption>
 
-<SdkOption name="AutomaticBreadcrumbsForLogs" type="bool">
+<SdkOption name="AutomaticBreadcrumbsForLogs" type="struct" defaultNote="enabled for Fatal, Error, and Warning">
 
-Configures whether to automatically add breadcrumbs for log messages with certain keywords (examples: `Fatal`, `Error`, `Warning`, `Log` and `Verbose`).
+Configures whether to automatically add breadcrumbs for log messages at specific verbosity levels. This is a struct containing boolean fields for different log levels:
+- `bOnFatalLog` - defaults to `true`
+- `bOnErrorLog` - defaults to `true`
+- `bOnWarningLog` - defaults to `true`
+- `bOnInfoLog` (Display/Log) - defaults to `false`
+- `bOnDebugLog` (Verbose/VeryVerbose) - defaults to `false`
 
 </SdkOption>
 
@@ -102,7 +112,7 @@ If you enable this option, be sure to manually remove what you don't want to sen
 
 </SdkOption>
 
-<SdkOption name="AttachScreenshot" type="bool">
+<SdkOption name="AttachScreenshot" type="bool" defaultValue="false">
 
 Takes a screenshot of the application when an error happens and includes it as an attachment.
 Learn more about enriching events with screenshots in our <PlatformLink to="/enriching-events/screenshots/">Screenshots documentation</PlatformLink>.