feat(rrweb): add screenshot strategy serialization

Serialize the screenshot strategy from replay options in RRWeb events,
mapping PIXEL_COPY to "pixelCopy" and defaulting to "canvas".

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: markushi

sentry/src/main/java/io/sentry/rrweb/RRWebOptionsEvent.java

@@ -6,6 +6,7 @@
 import io.sentry.JsonUnknown;
 import io.sentry.ObjectReader;
 import io.sentry.ObjectWriter;
+import io.sentry.ScreenshotStrategyType;
 import io.sentry.SentryOptions;
 import io.sentry.SentryReplayOptions;
 import io.sentry.protocol.SdkVersion;
@@ -52,6 +53,12 @@ public RRWebOptionsEvent(final @NotNull SentryOptions options) {
     optionsPayload.put("quality", replayOptions.getQuality().serializedName());
     optionsPayload.put("maskedViewClasses", replayOptions.getMaskViewClasses());
     optionsPayload.put("unmaskedViewClasses", replayOptions.getUnmaskViewClasses());
+
+    final String screenshotStrategy =
+        (replayOptions.getScreenshotStrategy() == ScreenshotStrategyType.PIXEL_COPY)
+            ? "pixelCopy"
+            : "canvas";
+    optionsPayload.put("screenshotStrategy", screenshotStrategy);
   }
 
   @NotNull

sentry/src/test/resources/json/rrweb_options_event.json

@@ -12,7 +12,8 @@
       "maskedViewClasses": [],
       "nativeSdkName": "sentry.java",
       "sessionSampleRate": 0.5,
-      "quality": "low"
+      "quality": "low",
+      "screenshotStrategy": "pixelCopy"
     }
   }
 }