bug #40043 [HttpFoundation] Setting REQUEST_TIME_FLOAT when constructing a Request object (ctasada)

This PR was merged into the 4.4 branch.

Discussion
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[HttpFoundation] Setting `REQUEST_TIME_FLOAT` when constructing a Request object

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       | Fix #38019
| License       | MIT
| Doc PR        | -

When creating a new Request object `REQUEST_TIME_FLOAT` was not set by default.

Replaces broken 39952 PR :(

Commits
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c52c1e0b9b [HttpFoundation] Setting `REQUEST_TIME_FLOAT` when constructing a Request object

Author: fabpot

Request.php

@@ -333,6 +333,7 @@ public static function create($uri, $method = 'GET', $parameters = [], $cookies
             'SCRIPT_FILENAME' => '',
             'SERVER_PROTOCOL' => 'HTTP/1.1',
             'REQUEST_TIME' => time(),
+            'REQUEST_TIME_FLOAT' => microtime(true),
         ], $server);
 
         $server['PATH_INFO'] = '';