fix: Kill browser process when killing process group fails

Fixes #8476. Similar fix to #8352 which only covered Windows.

src/node/BrowserRunner.ts

@@ -195,15 +195,23 @@ export class BrowserRunner {
             if (error) {
               // taskkill can fail to kill the process e.g. due to missing permissions.
               // Let's kill the process via Node API. This delays killing of all child
-              // proccesses of `this.proc` until the main Node.js process dies.
+              // processes of `this.proc` until the main Node.js process dies.
               proc.kill();
             }
           });
         } else {
           // on linux the process group can be killed with the group id prefixed with
           // a minus sign. The process group id is the group leader's pid.
           const processGroupId = -this.proc.pid;
-          process.kill(processGroupId, 'SIGKILL');
+
+          try {
+            process.kill(processGroupId, 'SIGKILL');
+          } catch (error) {
+            // Killing the process group can fail due e.g. to missing permissions.
+            // Let's kill the process via Node API. This delays killing of all child
+            // processes of `this.proc` until the main Node.js process dies.
+            proc.kill();
+          }
         }
       } catch (error) {
         throw new Error(