Add support for `login_button` filter

[nuotsu]

Describe the bug login_button filter isn't recognized and the linter displays an error squiggly line.

Expected Not show the linter error line.

Actual The following Liquid code is accurate but shows the squiggly line:

{{ shop | login_button: action: 'follow' }}

Stack trace

Undefined filter login_buttontheme-check (UnknownFilter)

Debugging information

• MacOS Sonoma [14.0 (23A344)]
• Version: 1.11.0

Additional context

[charlespwd]

Same as https://github.com/Shopify/theme-check/issues/750

Try the following in your vscode settings.json

{
  "shopifyLiquid.themeCheckNextDevPreview": true
}