Handle errors in tracing for environments that don't support Error.captureStackTrace (i.e. firefox) (#3623)

Error.captureStackTrace is used to get stacktrace for tracing details,
but it's not supported in some browser like firefox, so add handling for
it. thanks.

---------

Co-authored-by: Timothee Guerin <timothee.guerin@outlook.com>

.chronus/changes/avoid-break-from-stacktrace-2024-5-20-11-21-0.md

@@ -0,0 +1,7 @@
+---
+changeKind: fix
+packages:
+  - "@typespec/compiler"
+---
+
+Fix crash of language server on firefox 

packages/compiler/src/server/file-system-cache.ts

@@ -48,9 +48,17 @@ export function createFileSystemCache({
       changes = [];
       const r = cache.get(path);
       if (!r) {
-        const target: any = {};
+        let callstack: string | undefined;
-        Error.captureStackTrace(target);
+        try {
-        const callstack = target.stack.substring("Error\n".length);
+          const target: any = {};
+          // some browser doesn't support Error.captureStackTrace (i.e. Firefox)
+          if (typeof Error.captureStackTrace === "function") {
+            Error.captureStackTrace(target);
+            callstack = target.stack.substring("Error\n".length);
+          }
+        } catch {
+          // just ignore the error, we don't want tracing error to impact normal functionality
+        }
         log({ level: "trace", message: `FileSystemCache miss for ${path}`, detail: callstack });
       }
       return r;