Remove redundant command and enhance file copy with ignore logic

Removed the `clean:test-applications` command from e2e test setup as it is unnecessary. Improved the `copyToTemp` function by integrating `.gitignore` and `node_modules` filtering to exclude unwanted files during the copy process. This ensures a cleaner and more efficient temporary workspace.

Author: cod1k

dev-packages/e2e-tests/run.ts

@@ -68,7 +68,6 @@ async function run(): Promise<void> {
       registrySetup();
     }
 
-    await asyncExec('pnpm clean:test-applications', { env, cwd: __dirname });
     await asyncExec('pnpm cache delete "@sentry/*"', { env, cwd: __dirname });
 
     const testAppPaths = appName ? [appName.trim()] : globSync('*', { cwd: `${__dirname}/test-applications/` });