Add RewriteFrames to correct issue with source mappings (#8116)

Author: WillTaylorDev

.changeset/eighty-panthers-rule.md

@@ -0,0 +1,5 @@
+---
+"@cloudflare/workers-shared": patch
+---
+
+Adds a RewriteFrames integration for workers-shared Sentry source-mappings.

packages/workers-shared/utils/sentry.ts

@@ -1,4 +1,4 @@
-import { Toucan } from "toucan-js";
+import { RewriteFrames, Toucan } from "toucan-js";
 import type { ColoMetadata } from "./types";
 
 export function setupSentry(
@@ -22,6 +22,14 @@ export function setupSentry(
 		context,
 		sampleRate: 1.0,
 		release: versionMetadata?.tag,
+		integrations: [
+			new RewriteFrames({
+				iteratee(frame) {
+					frame.filename = "/index.js";
+					return frame;
+				},
+			}),
+		],
 		requestDataOptions: {
 			allowedHeaders: [
 				"user-agent",