Asking for support of non-numeric IDs for language server protocol (LSP) channels

[berggeist]

This is a follow up issue to the corresponding enhancement filed against Vim: vim/vim#19003
After the Vim codebase gets (hopefully) enhanced, the Vim9 source code for this LSP client needs also be adapted.

[Shane-XB-Qian]

it can, I did that originally (and some ones later), but just for now all was `0`, perhaps problematic; for permanent it needed @yegappan to re factor chan code I think so. maybe a bit complex and this topic happened repeatedly.

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-- shane.xb.qian