fix(files): fix issue with method get for files.

Author: Awilum

src/File.php

@@ -76,6 +76,8 @@ public function put(string $data, bool $lock = false): int|bool
      */
     public function get($lock = false): string|bool
     {
+        $contents = false;
+
         if ($this->isFile($this->path)) {
             $contents = $lock ? $this->sharedGet() : file_get_contents($this->path);
         }

tests/FilesystemTest.php

@@ -155,6 +155,7 @@
     $filesystem->file($this->tempDir . '/1.txt')->put('test');
     $this->assertEquals('test', $filesystem->file($this->tempDir . '/1.txt')->get());
     $this->assertEquals('test', $filesystem->file($this->tempDir . '/1.txt')->get(true));
+    $this->assertEquals(false, $filesystem->file($this->tempDir . '/2.txt')->get());
 });
 
 test('file sharedGet method', function (): void {