Console VM stuck when paste long line

##### ISSUE TYPE

* Bug Report

##### COMPONENT NAME

~~~
Console VM
Instance
~~~

##### CLOUDSTACK VERSION

~~~
4.19.1.1
~~~

##### CONFIGURATION

##### OS / ENVIRONMENT

VMware esxi: 8.0.2
vSphere: 8.0.2

##### SUMMARY

When i paste long line (about 15-20 characters) to Console VM with Clipboard in NoVNC, Console VM stuck and i can't do anything until reboot VM

With KVM everything is normal

##### STEPS TO REPRODUCE

~~~
Paste long line to clipboard then press send
~~~

##### EXPECTED RESULTS

~~~
Console VM normal
~~~

##### ACTUAL RESULTS

~~~
Console VM stuck with consoleproxy and Remote Console vSphere.
~~~

Start by reproducing the reported steps: paste a 15–20 character line through NoVNC Clipboard into a VMware vSphere Console VM, then compare the behavior with KVM. Trace the Console VM and consoleproxy path involved in the VMware case. Done means long clipboard pastes no longer stall the console or require a VM reboot.

Written by the indexing model from the issue text.