bug #53481 [Process] Fix executable finder when the command starts wi…

…th a dash (kayw-geek)

This PR was submitted for the 7.1 branch but it was merged into the 5.4 branch instead.

Discussion
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[Process] Fix executable finder when the command starts with a dash

| Q             | A
| ------------- | ---
| Branch?       |  5.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Issues        | Fix #53479
| License       | MIT

Commits
-------

8ceaa8e [Process] Fix executable finder when the command starts with a dash

src/Symfony/Component/Process/PhpExecutableFinder.php

@@ -35,7 +35,7 @@ public function find(bool $includeArgs = true)
     {
         if ($php = getenv('PHP_BINARY')) {
             if (!is_executable($php)) {
-                $command = '\\' === \DIRECTORY_SEPARATOR ? 'where' : 'command -v';
+                $command = '\\' === \DIRECTORY_SEPARATOR ? 'where' : 'command -v --';
                 if ($php = strtok(exec($command.' '.escapeshellarg($php)), \PHP_EOL)) {
                     if (!is_executable($php)) {
                         return false;