Changes to `original` property not detected properly

When using the ngx-monaco-diff-editor component, input changes for original are not detected properly.

ngx-monaco-editor/src/ngx-monaco-editor/src/lib/components/monaco-diff-editor/monaco-diff-editor.component.ts

Line 72 in 952a865

if (this.editor && ((changes.code && !changes.code.firstChange) || (changes.modified && !changes.modified.firstChange))) {

I guess replacing (changes.code && !changes.code.firstChange) with (changes.original && !changes.original.firstChange) would solve the issue.

Should I create a PR for this?

[arthurhauer]

In fact, replacing these variables does fix the issue.