fix(lsp): disable didChangeWatchedFiles on Linux

Problem:

The file watcher backends for Linux have too many limitations and
doesn't work reliably.

Solution:

disable didChangeWatchedFiles on Linux

Ref: #27807, #28058, #23291, #26520

runtime/lua/vim/lsp/protocol.lua

@@ -10,6 +10,8 @@ local function get_value_set(tbl)
   return value_set
 end
 
+local sysname = vim.uv.os_uname().sysname
+
 -- Protocol for the Microsoft Language Server Protocol (mslsp)
 local protocol = {}
 
@@ -835,7 +837,10 @@ function protocol.make_client_capabilities()
         refreshSupport = true,
       },
       didChangeWatchedFiles = {
-        dynamicRegistration = true,
+        -- TODO(lewis6991): do not advertise didChangeWatchedFiles on Linux
+        -- or BSD since all the current backends are too limited.
+        -- Ref: #27807, #28058, #23291, #26520
+        dynamicRegistration = sysname == 'Darwin' or sysname == 'Windows_NT',
         relativePatternSupport = true,
       },
       inlayHint = {