临时的解决办法有了，试过可用：Thanks to the patch author! @vvb2060

Let me explain in detail the operation steps for this developer’s app (tested and working on my Pixel 9 Pro with the October patch):

The patch only needs to be installed; after installation, just follow the steps below. (No manual activation is required.)

Download the app and install it directly.
Open Shizuku, find io.github.vvb2060.ims under “Authorized apps,” and grant authorization.
Go back to the main page of Shizuku, tap the three dots in the top right corner, and stop Shizuku.
Then restart Shizuku.
Go to the system SIM card settings page and enable VoLTE.
Additional note about rebooting: After the first reboot, VoLTE will be off when the phone starts up. Just turn it on once manually — from then on, it will stay enabled by default after every reboot.

Can confirm it works in P7. First I was getting the IMS app crash. I was on updated shizuku, still reinstalled shizuku. yet no Volte option was apprearing in the network setting menu, I have 2 sim. one sim supports volte another has no volte support in Bangladesh. I disable one sim then went through the process again, then it worked. Thanks a ton!
下载链接： https://we.tl/t-IJUujEbem4