Catch resolveSourceMap promise if errors

There is no known way this promise errors, but just in case, catch and
ignore any error that may occur so that the trace analysis doesn't
needlessly fail.

Bug: 416107350
Change-Id: I81369345035c9361c496838fb69bd72c0d419d7a
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6527147
Commit-Queue: Connor Clark <cjamcl@chromium.org>
Reviewed-by: Paul Irish <paulirish@chromium.org>
Auto-Submit: Connor Clark <cjamcl@chromium.org>

Author: Connor Clark

front_end/models/trace/handlers/ScriptsHandler.ts

@@ -281,7 +281,9 @@ export async function finalize(options: Types.Configuration.ParseOptions): Promi
         script.sourceMap = sourceMap;
       }
     });
-    promises.push(promise);
+    promises.push(promise.catch(e => {
+      console.error('Uncaught error when resolving source map', params, e);
+    }));
   }
   await Promise.all(promises);
 }