patch 9.1.1049: insert-completed items are always sorted

Problem:  insert-completed items are always sorted, although the LSP
          spec[1] standard defines sortText in the returned
          completionitem list. This means that the server has sorted the
          results. When fuzzy is enabled, this will break the server's
          sorting results.
Solution: disable sorting of candidates when "nosort" is set in
          'completeopt'

[1]
https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#completionItem

closes: #16501

Signed-off-by: glepnir <glephunter@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/optionstr.c b/src/optionstr.c
index 86c7967..8672665 100644
--- a/src/optionstr.c
+++ b/src/optionstr.c
@@ -120,7 +120,7 @@
 				NULL};
 static char *(p_fcl_values[]) = {"all", NULL};
 #endif
-static char *(p_cot_values[]) = {"menu", "menuone", "longest", "preview", "popup", "popuphidden", "noinsert", "noselect", "fuzzy", NULL};
+static char *(p_cot_values[]) = {"menu", "menuone", "longest", "preview", "popup", "popuphidden", "noinsert", "noselect", "fuzzy", "nosort", NULL};
 #ifdef BACKSLASH_IN_FILENAME
 static char *(p_csl_values[]) = {"slash", "backslash", NULL};
 #endif