fix(websocket): Fix websocket client race on abort and memory leak(IDFGH-16555)

[gabsuren]

Description

This PR fixes critical memory leaks and crashes in the ESP WebSocket client that occur during reconnection scenarios(CONFIG_ESP_WS_CLIENT_SEPARATE_TX_LOCK = y).

• Double-free crashes: Heap corruption during abort/reconnect scenarios
• Data loss: First packet after reconnection not received
• Error buffer accumulation: 2KB memory leak on disconnect

Changes Made:

• Add state-based protection in esp_websocket_client_abort_connection() to prevent double-close
• Reset frame parsing state variables in esp_websocket_client_task() before dispatching WEBSOCKET_EVENT_CONNECTED
• Free errormsg_buffer in esp_websocket_client_abort_connection() when client disconnects
• Destroy client->transport_list immediately in esp_websocket_client_stop()
• Fix transport layer resource cleanup in ws_close() function

Related

#898

Checklist

Before submitting a Pull Request, please ensure the following:

• 🚨 This PR does not introduce breaking changes.
• [ ✓ ] All CI checks (GH Actions) pass.
• [ ✓] Documentation is updated as needed.
• Tests are updated or added as necessary.
• [ ✓] Code is well-commented, especially in complex areas.
• [ ✓] Git history is clean — commits are squashed to the minimum necessary.

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