Fixed issues in 1912 LTSR CU3 编辑

The following issues have been fixed since Linux Virtual Delivery Agent 1912 LTSR CU2:

After upgrading a 64-bit Linux VDA, user attempts to start applications can fail. Users see a message indicating that the application is starting, then the message disappears. As a result, multiple stale sessions remain on the VDA. [CVADHELP-15899]
After performing scans, the ctxmonitorservice process might exit unexpectedly with a SIGABRT error. [CVADHELP-15969]
Attempts to select the Picture Transfer Protocol (PTP) and Media Transfer Protocol (MTP) USB options, might fail on a Xiaomi Mi 10 phone. [CVADHELP-16188]
When the Citrix Desktop Viewer (CDViewer.exe) window disappears, attempts to reconnect to the Linux VDA might fail. [CVADHELP-16239]
In Linux VDAs, some applications might not recognize a webcam device that appears in the Device option. [CVADHELP-16247]
When using USB redirection for a webcam in a Linux VDA session, the ctxusbsd process might exit unexpectedly with a segfault error. [CVADHELP-16366]
The ctxcdmd process might not run in the correct SELinux security context. [CVADHELP-16381]
A smart card might fail to work when it is configured to a Linux VDA. [CVADHELP-16488]
The text appearing in a Linux VDA session might be distorted and blurry. [CVADHELP-17199]