extension: update gopls v0.22.0-pre.4 settings

This is an automated CL which updates the gopls version and settings.

For golang/go#79000

Change-Id: I3128669d08398007f7131d3c1729023f727f3117
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/778220
Reviewed-by: Alan Donovan <adonovan@google.com>
Reviewed-by: Hongxiang Jiang <hxjiang@golang.org>
LUCI-TryBot-Result: golang-scoped@luci-project-accounts.iam.gserviceaccount.com <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Gopher Robot <gobot@golang.org>

Author: gopherbot

docs/settings.md

@@ -661,6 +661,21 @@ matching a glob specified here will trigger a reload of the workspace.
 This setting need only be customized in environments with a custom
 GOPACKAGESDRIVER.
 
+### `fileWatcher`
+
+(Experimental) fileWatcher specifies the server-side file watching strategy used by gopls.
+
+By default, this is set to "off", meaning gopls relies exclusively on the
+language client (e.g., the editor) to send file change notifications.
+
+Available options:
+  - "off"      : Client-driven watching (default)
+  - "fsnotify" : OS-level event notifications
+  - "poll"     : Periodic directory scanning
+<br/>
+Allowed Options: `fsnotify`, `off`, `poll`
+
+Default: `"off"`
 ### `formatting.gofumpt`
 
 gofumpt indicates if we should run gofumpt formatting.

extension/package.json

@@ -2100,6 +2100,22 @@
               "default": [],
               "scope": "resource"
             },
+            "fileWatcher": {
+              "type": "string",
+              "markdownDescription": "(Experimental) fileWatcher specifies the server-side file watching strategy used by gopls.\n\nBy default, this is set to \"off\", meaning gopls relies exclusively on the\nlanguage client (e.g., the editor) to send file change notifications.\n\nAvailable options:\n  - \"off\"      : Client-driven watching (default)\n  - \"fsnotify\" : OS-level event notifications\n  - \"poll\"     : Periodic directory scanning\n",
+              "enum": [
+                "fsnotify",
+                "off",
+                "poll"
+              ],
+              "markdownEnumDescriptions": [
+                "",
+                "",
+                ""
+              ],
+              "default": "off",
+              "scope": "resource"
+            },
             "formatting.gofumpt": {
               "type": "boolean",
               "markdownDescription": "gofumpt indicates if we should run gofumpt formatting.\n",