fix(CDPBrowser): bound poll request timeout, prevent orphaned server process on failed start

- _waitForServer: each /json/version poll is bounded by a 1s (or remaining deadline) axios timeout,
  so a port held by something that never responds can not hang the run forever
- _connect: self-managed resolution is attempted exactly once; on failure the error is stored
  and rethrown on subsequent connects instead of spawning a second process

Co-Authored-By: Claude <noreply@anthropic.com>

Author: DenysKuchma

lib/helper/CDPBrowser.js

@@ -320,7 +320,7 @@ class CDPBrowser extends Helper {
         throw new Error(`Failed to start ${name} at ${this.binaryPath}: ${this.serverError.message}`)
       }
       try {
-        await axios.get(`http://127.0.0.1:${this.options.port}/json/version`)
+        await axios.get(`http://127.0.0.1:${this.options.port}/json/version`, { timeout: Math.min(1000, deadline - Date.now()) })
         return
       } catch (e) {
         await new Promise(r => setTimeout(r, 20))
@@ -340,9 +340,17 @@ class CDPBrowser extends Helper {
    * @protected
    */
   async _connect() {
-    if (this.server && !this._selfManagedResolved) {
-      await this._resolveSelfManaged()
-      this._selfManagedResolved = true
+    if (this.server) {
+      if (this._selfManagedError) throw this._selfManagedError
+      if (!this._selfManagedResolved) {
+        this._selfManagedResolved = true
+        try {
+          await this._resolveSelfManaged()
+        } catch (err) {
+          this._selfManagedError = err
+          throw err
+        }
+      }
     }
     const endpoint = await this._resolveEndpoint()
     this.cdp = new CDPConnection(endpoint, { headers: this.options.headers, timeout: this.options.getPageTimeout * 1000 })