uri/win_uri: Make method a free text field (#49719)

* uri/win_uri: Make method a free text field

Since various interfaces introduce their own HTTP method (e.g. like
PROPFIND, LIST or TRACE) it's better to leave this up to the user.

* Fix HTTP method check in module_utils urls

* Add integration test for method UNKNOWN

* Clarify the change as requested during review

lib/ansible/modules/windows/win_uri.ps1

@@ -15,7 +15,6 @@ $spec = @{
         method = @{
             type = "str"
             default = "GET"
-            choices = "CONNECT", "DELETE", "GET", "HEAD", "MERGE", "OPTIONS", "PATCH", "POST", "PUT", "REFRESH", "TRACE"
        }
        content_type = @{ type = "str" }
        headers = @{ type = "dict" }
@@ -44,7 +43,7 @@ $spec = @{
 $module = [Ansible.Basic.AnsibleModule]::Create($args, $spec)
 
 $url = $module.Params.url
-$method = $module.Params.method
+$method = $module.Params.method.ToUpper()
 $content_type = $module.Params.content_type
 $headers = $module.Params.headers
 $body = $module.Params.body
@@ -68,6 +67,10 @@ $JSON_CANDIDATES = @('text', 'json', 'javascript')
 $module.Result.elapsed = 0
 $module.Result.url = $url
 
+if (-not ($method -cmatch '^[A-Z]+$')) {
+    $module.FailJson("Parameter 'method' needs to be a single word in uppercase, like GET or POST.")
+}
+
 if ($creates -and (Test-AnsiblePath -Path $creates)) {
     $module.Result.skipped = $true
     $module.Result.msg = "The 'creates' file or directory ($creates) already exists."

lib/ansible/modules/windows/win_uri.py

@@ -28,7 +28,6 @@ options:
     description:
     - The HTTP Method of the request or response.
     type: str
-    choices: [ CONNECT, DELETE, GET, HEAD, MERGE, OPTIONS, PATCH, POST, PUT, REFRESH, TRACE ]
     default: GET
   content_type:
     description: