minor #32452 [Bundles] Rename getPublicPath() as getPublicDir() (javiereguiluz)

This PR was squashed before being merged into the 4.4 branch (closes #32452).

Discussion
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[Bundles] Rename getPublicPath() as getPublicDir()

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | no
| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->
| BC breaks?    | no     <!-- see https://symfony.com/bc -->
| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tests pass?   | yes    <!-- please add some, will be required by reviewers -->
| Fixed tickets | -
| License       | MIT
| Doc PR        | I'll add this if approved

While documenting #31975 (see symfony/symfony-docs#11930) I realized that the `getPublicPath()` method name is not consistent with the rest of Symfony.

In Symfony, "path" is usually associated to routes and we use "dir" for things similar to this:

* `getCacheDir()` and `getLogdir()` to override Symfony structure (https://symfony.com/doc/current/configuration/override_dir_structure.html)
* `binDir`, `configDir`, `srcDir`, `varDir`, `publicDir` in Symfony Flex recipes (https://github.com/symfony/recipes) to override the dir structure

So, this PR proposes to rename `getPublicPath()` as `getPublicDir()`

Commits
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4ab2f9955b [Bundles] Rename getPublicPath() as getPublicDir()

Author: fabpot

Command/AssetsInstallCommand.php

@@ -137,13 +137,13 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $validAssetDirs = [];
         /** @var BundleInterface $bundle */
         foreach ($kernel->getBundles() as $bundle) {
-            if (!method_exists($bundle, 'getPublicPath')) {
-                @trigger_error('Not defining "getPublicPath()" method is deprecated since Symfony 4.4 and will not be supported in 5.0.', E_USER_DEPRECATED);
-                $publicPath = 'Resources/public';
+            if (!method_exists($bundle, 'getPublicDir')) {
+                @trigger_error(sprintf('Not defining "getPublicDir()" method in the "%s" class is deprecated since Symfony 4.4 and will not be supported in 5.0.', get_class($bundle)), E_USER_DEPRECATED);
+                $publicDir = 'Resources/public';
             } else {
-                $publicPath = $bundle->getPublicPath();
+                $publicDir = ltrim($bundle->getPublicDir(), '\\/');
             }
-            if (!is_dir($originDir = $bundle->getPath().\DIRECTORY_SEPARATOR.$publicPath)) {
+            if (!is_dir($originDir = $bundle->getPath().\DIRECTORY_SEPARATOR.$publicDir)) {
                 continue;
             }