fix(editor-preview-asyncapi): replace parser function to avoid errors in resolved definitions

[glowcloud]

Fixes an issue where resolved definitions would fail during parsing. The error was narrowed down to come from one of the custom Spectral validation functions in @asyncapi/parser. This issue was fixed in @asyncapi/parser but the fix remains unpublished to npm. This issue was filed in https://github.com/asyncapi/parser-js/issues/1115.

Before:

After:

• resolved:

• unresolved with incorrect $ref:

• unresolved with correct $ref:

[eriktim]

Thanks @andys8, LGTM

cc: @wing328