[reland] Adding vscode path installed via snap (#81989)

packages/flutter_tools/lib/src/vscode/vscode.dart

@@ -239,6 +239,7 @@ class VsCode {
 
   // Linux:
   //   /usr/share/code/bin/code
+  //   /snap/code/current
   //   /usr/share/code-insiders/bin/code-insiders
   // Linux Extensions:
   //   $HOME/.vscode/extensions
@@ -246,6 +247,7 @@ class VsCode {
   static List<VsCode> _installedLinux(FileSystem fileSystem, Platform platform) {
     return _findInstalled(<VsCodeInstallLocation>[
       const VsCodeInstallLocation('/usr/share/code', '.vscode'),
+      const VsCodeInstallLocation('/snap/code/current', '.vscode'),
       const VsCodeInstallLocation(
         '/usr/share/code-insiders',
         '.vscode-insiders',

packages/flutter_tools/test/general.shard/vscode/vscode_test.dart

@@ -41,6 +41,19 @@ void main() {
     expect(vsCode.version, Version.unknown);
   });
 
+  testWithoutContext('can locate VS Code installed via Snap', () {
+    final FileSystem fileSystem = MemoryFileSystem.test();
+    const String home = '/home/me';
+    final Platform platform = FakePlatform(operatingSystem: 'linux', environment: <String, String>{'HOME': home});
+
+    fileSystem.directory(fileSystem.path.join('/snap/code/current/', '.vscode')).createSync(recursive: true);
+
+    final FakeProcessManager processManager = FakeProcessManager.list(<FakeCommand>[]);
+
+    final List<VsCode> installed = VsCode.allInstalled(fileSystem, platform, processManager);
+    expect(installed.length, 1);
+  });
+
   testWithoutContext('can locate installations on macOS', () {
     final FileSystem fileSystem = MemoryFileSystem.test();
     const String home = '/home/me';