fix: only count something as a directory if it has children (#4595)

* fix: only count something as a directory if it has children

* fix: playwright tests

* fix: return 0 if you cant find the projectfolder

* fix: remove folder count from e2e tests since it is unused currently

---------

Co-authored-by: Tom Pridham <pridham.tom@gmail.com>

e2e/playwright/file-tree.spec.ts

@@ -45,7 +45,6 @@ test.describe('integrations tests', () => {
             {
               title: 'test-sample',
               fileCount: 1,
-              folderCount: 1,
             },
           ],
           sortBy: 'last-modified-desc',
@@ -233,7 +232,6 @@ test.describe('when using the file tree to', () => {
             {
               title: projectName,
               fileCount: 2,
-              folderCount: 2, // TODO: This is a pre-existing bug, there are no folders within the project
             },
           ],
           sortBy: 'last-modified-desc',